Home / 457,988.18-687,011.67-121,020.22

Finding the Fourth Proportional to 457,988.18, 687,011.67 and 121,020.22

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Solution

The fourth proportional to 457,988.18, 687,011.67 and 121,020.22 is: 181,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,988.18 : 687,011.67 = 121,020.22 : x
  2. Step 2: Convert to fraction form
    457,988.18/687,011.67 = 121,020.22/x
  3. Step 3: Cross multiply
    457,988.18x = 687,011.67 × 121,020.22
  4. Step 4: Simplify right side
    457,988.18x = 83,142,303,445.97
  5. Step 5: Solve for x
    x = 83,142,303,445.97/457,988.18
  6. Step 6: Final answer
    x = 181,538.10

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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.