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Finding the Fourth Proportional to 555,641.64, 766,747.62 and 313,934.40

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Solution

The fourth proportional to 555,641.64, 766,747.62 and 313,934.40 is: 433,208.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,641.64 : 766,747.62 = 313,934.40 : x
  2. Step 2: Convert to fraction form
    555,641.64/766,747.62 = 313,934.40/x
  3. Step 3: Cross multiply
    555,641.64x = 766,747.62 × 313,934.40
  4. Step 4: Simplify right side
    555,641.64x = 240,708,454,036.13
  5. Step 5: Solve for x
    x = 240,708,454,036.13/555,641.64
  6. Step 6: Final answer
    x = 433,208.09

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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.