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Finding the Fourth Proportional to 572,123.04, 789,542.64 and 317,470.56

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Solution

The fourth proportional to 572,123.04, 789,542.64 and 317,470.56 is: 438,116.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,123.04 : 789,542.64 = 317,470.56 : x
  2. Step 2: Convert to fraction form
    572,123.04/789,542.64 = 317,470.56/x
  3. Step 3: Cross multiply
    572,123.04x = 789,542.64 × 317,470.56
  4. Step 4: Simplify right side
    572,123.04x = 250,656,544,064.68
  5. Step 5: Solve for x
    x = 250,656,544,064.68/572,123.04
  6. Step 6: Final answer
    x = 438,116.50

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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.