Home / 749,212.80-1,123,819.20-497,270.40

Finding the Fourth Proportional to 749,212.80, 1,123,819.20 and 497,270.40

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Solution

The fourth proportional to 749,212.80, 1,123,819.20 and 497,270.40 is: 745,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,212.80 : 1,123,819.20 = 497,270.40 : x
  2. Step 2: Convert to fraction form
    749,212.80/1,123,819.20 = 497,270.40/x
  3. Step 3: Cross multiply
    749,212.80x = 1,123,819.20 × 497,270.40
  4. Step 4: Simplify right side
    749,212.80x = 558,842,023,111.68
  5. Step 5: Solve for x
    x = 558,842,023,111.68/749,212.80
  6. Step 6: Final answer
    x = 745,905.60

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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.