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Finding the Fourth Proportional to 528,612.91, 729,154.02 and 313,600.75

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Solution

The fourth proportional to 528,612.91, 729,154.02 and 313,600.75 is: 432,572.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,612.91 : 729,154.02 = 313,600.75 : x
  2. Step 2: Convert to fraction form
    528,612.91/729,154.02 = 313,600.75/x
  3. Step 3: Cross multiply
    528,612.91x = 729,154.02 × 313,600.75
  4. Step 4: Simplify right side
    528,612.91x = 228,663,247,537.52
  5. Step 5: Solve for x
    x = 228,663,247,537.52/528,612.91
  6. Step 6: Final answer
    x = 432,572.20

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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.