Home / 1,373,621,678.30-1,896,090,985.41-816,703,396.76

Finding the Fourth Proportional to 1,373,621,678.30, 1,896,090,985.41 and 816,703,396.76

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Solution

The fourth proportional to 1,373,621,678.30, 1,896,090,985.41 and 816,703,396.76 is: 1,127,343,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373,621,678.30 : 1,896,090,985.41 = 816,703,396.76 : x
  2. Step 2: Convert to fraction form
    1,373,621,678.30/1,896,090,985.41 = 816,703,396.76/x
  3. Step 3: Cross multiply
    1,373,621,678.30x = 1,896,090,985.41 × 816,703,396.76
  4. Step 4: Simplify right side
    1,373,621,678.30x = 1,548,543,948,350,362,624
  5. Step 5: Solve for x
    x = 1,548,543,948,350,362,624/1,373,621,678.30
  6. Step 6: Final answer
    x = 1,127,343,847.88

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Double scale
Find fourth proportional to 1,373,621,679.30, 1,896,090,986.79 and 816,703,397.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.