Home / 657,914.16-907,921.56-356,108.40

Finding the Fourth Proportional to 657,914.16, 907,921.56 and 356,108.40

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Solution

The fourth proportional to 657,914.16, 907,921.56 and 356,108.40 is: 491,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,914.16 : 907,921.56 = 356,108.40 : x
  2. Step 2: Convert to fraction form
    657,914.16/907,921.56 = 356,108.40/x
  3. Step 3: Cross multiply
    657,914.16x = 907,921.56 × 356,108.40
  4. Step 4: Simplify right side
    657,914.16x = 323,318,494,057.10
  5. Step 5: Solve for x
    x = 323,318,494,057.10/657,914.16
  6. Step 6: Final answer
    x = 491,429.60

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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.