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Finding the Fourth Proportional to 572,154.56, 789,549.36 and 317,490.56

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Solution

The fourth proportional to 572,154.56, 789,549.36 and 317,490.56 is: 438,123.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,154.56 : 789,549.36 = 317,490.56 : x
  2. Step 2: Convert to fraction form
    572,154.56/789,549.36 = 317,490.56/x
  3. Step 3: Cross multiply
    572,154.56x = 789,549.36 × 317,490.56
  4. Step 4: Simplify right side
    572,154.56x = 250,674,468,454.04
  5. Step 5: Solve for x
    x = 250,674,468,454.04/572,154.56
  6. Step 6: Final answer
    x = 438,123.69

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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.