Home / 487,550.16-731,030.20-318,867.28

Finding the Fourth Proportional to 487,550.16, 731,030.20 and 318,867.28

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Solution

The fourth proportional to 487,550.16, 731,030.20 and 318,867.28 is: 478,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,550.16 : 731,030.20 = 318,867.28 : x
  2. Step 2: Convert to fraction form
    487,550.16/731,030.20 = 318,867.28/x
  3. Step 3: Cross multiply
    487,550.16x = 731,030.20 × 318,867.28
  4. Step 4: Simplify right side
    487,550.16x = 233,101,611,471.86
  5. Step 5: Solve for x
    x = 233,101,611,471.86/487,550.16
  6. Step 6: Final answer
    x = 478,107.96

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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.