Home / 918,681.80-1,378,022.70-664,771.10

Finding the Fourth Proportional to 918,681.80, 1,378,022.70 and 664,771.10

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Solution

The fourth proportional to 918,681.80, 1,378,022.70 and 664,771.10 is: 997,156.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,681.80 : 1,378,022.70 = 664,771.10 : x
  2. Step 2: Convert to fraction form
    918,681.80/1,378,022.70 = 664,771.10/x
  3. Step 3: Cross multiply
    918,681.80x = 1,378,022.70 × 664,771.10
  4. Step 4: Simplify right side
    918,681.80x = 916,069,666,103.97
  5. Step 5: Solve for x
    x = 916,069,666,103.97/918,681.80
  6. Step 6: Final answer
    x = 997,156.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.