Home / 749,076.80-1,123,615.20-497,134.40

Finding the Fourth Proportional to 749,076.80, 1,123,615.20 and 497,134.40

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Solution

The fourth proportional to 749,076.80, 1,123,615.20 and 497,134.40 is: 745,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,076.80 : 1,123,615.20 = 497,134.40 : x
  2. Step 2: Convert to fraction form
    749,076.80/1,123,615.20 = 497,134.40/x
  3. Step 3: Cross multiply
    749,076.80x = 1,123,615.20 × 497,134.40
  4. Step 4: Simplify right side
    749,076.80x = 558,587,768,282.88
  5. Step 5: Solve for x
    x = 558,587,768,282.88/749,076.80
  6. Step 6: Final answer
    x = 745,701.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.