Home / 661,945.12-913,488.24-360,141.28

Finding the Fourth Proportional to 661,945.12, 913,488.24 and 360,141.28

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Solution

The fourth proportional to 661,945.12, 913,488.24 and 360,141.28 is: 496,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,945.12 : 913,488.24 = 360,141.28 : x
  2. Step 2: Convert to fraction form
    661,945.12/913,488.24 = 360,141.28/x
  3. Step 3: Cross multiply
    661,945.12x = 913,488.24 × 360,141.28
  4. Step 4: Simplify right side
    661,945.12x = 328,984,824,018.55
  5. Step 5: Solve for x
    x = 328,984,824,018.55/661,945.12
  6. Step 6: Final answer
    x = 496,997.13

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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.