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Finding the Fourth Proportional to 555,265, 766,206.90 and 313,532.92

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Solution

The fourth proportional to 555,265, 766,206.90 and 313,532.92 is: 432,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,265 : 766,206.90 = 313,532.92 : x
  2. Step 2: Convert to fraction form
    555,265/766,206.90 = 313,532.92/x
  3. Step 3: Cross multiply
    555,265x = 766,206.90 × 313,532.92
  4. Step 4: Simplify right side
    555,265x = 240,231,086,681.15
  5. Step 5: Solve for x
    x = 240,231,086,681.15/555,265
  6. Step 6: Final answer
    x = 432,642.23

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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.