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Finding the Fourth Proportional to 539,490.54, 744,385.80 and 310,003.49

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Solution

The fourth proportional to 539,490.54, 744,385.80 and 310,003.49 is: 427,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,490.54 : 744,385.80 = 310,003.49 : x
  2. Step 2: Convert to fraction form
    539,490.54/744,385.80 = 310,003.49/x
  3. Step 3: Cross multiply
    539,490.54x = 744,385.80 × 310,003.49
  4. Step 4: Simplify right side
    539,490.54x = 230,762,194,742.75
  5. Step 5: Solve for x
    x = 230,762,194,742.75/539,490.54
  6. Step 6: Final answer
    x = 427,740.95

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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.