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Finding the Fourth Proportional to 534,688.30, 801,792.69 and 318,649.05

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Solution

The fourth proportional to 534,688.30, 801,792.69 and 318,649.05 is: 477,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,688.30 : 801,792.69 = 318,649.05 : x
  2. Step 2: Convert to fraction form
    534,688.30/801,792.69 = 318,649.05/x
  3. Step 3: Cross multiply
    534,688.30x = 801,792.69 × 318,649.05
  4. Step 4: Simplify right side
    534,688.30x = 255,490,480,160.38
  5. Step 5: Solve for x
    x = 255,490,480,160.38/534,688.30
  6. Step 6: Final answer
    x = 477,830.69

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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.