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Finding the Fourth Proportional to 674,395.56, 930,654.85 and 368,465.34

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Solution

The fourth proportional to 674,395.56, 930,654.85 and 368,465.34 is: 508,476.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,395.56 : 930,654.85 = 368,465.34 : x
  2. Step 2: Convert to fraction form
    674,395.56/930,654.85 = 368,465.34/x
  3. Step 3: Cross multiply
    674,395.56x = 930,654.85 × 368,465.34
  4. Step 4: Simplify right side
    674,395.56x = 342,914,055,727.90
  5. Step 5: Solve for x
    x = 342,914,055,727.90/674,395.56
  6. Step 6: Final answer
    x = 508,476.15

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Double scale
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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.