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Finding the Fourth Proportional to 528,462.72, 729,230.40 and 313,565.76

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Solution

The fourth proportional to 528,462.72, 729,230.40 and 313,565.76 is: 432,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,462.72 : 729,230.40 = 313,565.76 : x
  2. Step 2: Convert to fraction form
    528,462.72/729,230.40 = 313,565.76/x
  3. Step 3: Cross multiply
    528,462.72x = 729,230.40 × 313,565.76
  4. Step 4: Simplify right side
    528,462.72x = 228,661,684,591.10
  5. Step 5: Solve for x
    x = 228,661,684,591.10/528,462.72
  6. Step 6: Final answer
    x = 432,692.18

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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.