Home / 520,681.14-781,038.90-179,121.15

Finding the Fourth Proportional to 520,681.14, 781,038.90 and 179,121.15

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Solution

The fourth proportional to 520,681.14, 781,038.90 and 179,121.15 is: 268,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,681.14 : 781,038.90 = 179,121.15 : x
  2. Step 2: Convert to fraction form
    520,681.14/781,038.90 = 179,121.15/x
  3. Step 3: Cross multiply
    520,681.14x = 781,038.90 × 179,121.15
  4. Step 4: Simplify right side
    520,681.14x = 139,900,585,962.74
  5. Step 5: Solve for x
    x = 139,900,585,962.74/520,681.14
  6. Step 6: Final answer
    x = 268,687.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.