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Finding the Fourth Proportional to 542,282.40, 748,394.49 and 300,640.77

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Solution

The fourth proportional to 542,282.40, 748,394.49 and 300,640.77 is: 414,909.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,282.40 : 748,394.49 = 300,640.77 : x
  2. Step 2: Convert to fraction form
    542,282.40/748,394.49 = 300,640.77/x
  3. Step 3: Cross multiply
    542,282.40x = 748,394.49 × 300,640.77
  4. Step 4: Simplify right side
    542,282.40x = 224,997,895,737.36
  5. Step 5: Solve for x
    x = 224,997,895,737.36/542,282.40
  6. Step 6: Final answer
    x = 414,909.09

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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.