Home / 687,938.91-949,337.31-382,007.31

Finding the Fourth Proportional to 687,938.91, 949,337.31 and 382,007.31

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Solution

The fourth proportional to 687,938.91, 949,337.31 and 382,007.31 is: 527,159.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,938.91 : 949,337.31 = 382,007.31 : x
  2. Step 2: Convert to fraction form
    687,938.91/949,337.31 = 382,007.31/x
  3. Step 3: Cross multiply
    687,938.91x = 949,337.31 × 382,007.31
  4. Step 4: Simplify right side
    687,938.91x = 362,653,792,075.74
  5. Step 5: Solve for x
    x = 362,653,792,075.74/687,938.91
  6. Step 6: Final answer
    x = 527,159.88

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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.