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Finding the Fourth Proportional to 572,318.64, 789,799.68 and 317,669.76

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Solution

The fourth proportional to 572,318.64, 789,799.68 and 317,669.76 is: 438,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,318.64 : 789,799.68 = 317,669.76 : x
  2. Step 2: Convert to fraction form
    572,318.64/789,799.68 = 317,669.76/x
  3. Step 3: Cross multiply
    572,318.64x = 789,799.68 × 317,669.76
  4. Step 4: Simplify right side
    572,318.64x = 250,895,474,793.68
  5. Step 5: Solve for x
    x = 250,895,474,793.68/572,318.64
  6. Step 6: Final answer
    x = 438,384.24

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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.