Home / 908,012.07-1,253,145.14-678,170.30

Finding the Fourth Proportional to 908,012.07, 1,253,145.14 and 678,170.30

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Solution

The fourth proportional to 908,012.07, 1,253,145.14 and 678,170.30 is: 935,941.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,012.07 : 1,253,145.14 = 678,170.30 : x
  2. Step 2: Convert to fraction form
    908,012.07/1,253,145.14 = 678,170.30/x
  3. Step 3: Cross multiply
    908,012.07x = 1,253,145.14 × 678,170.30
  4. Step 4: Simplify right side
    908,012.07x = 849,845,810,967.04
  5. Step 5: Solve for x
    x = 849,845,810,967.04/908,012.07
  6. Step 6: Final answer
    x = 935,941.09

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Half scale
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Double scale
Find fourth proportional to 908,013.07, 1,253,146.52 and 678,171.30
Similar ratio
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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.