Home / 749,028.80-1,123,543.20-434,100.80

Finding the Fourth Proportional to 749,028.80, 1,123,543.20 and 434,100.80

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Solution

The fourth proportional to 749,028.80, 1,123,543.20 and 434,100.80 is: 651,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,028.80 : 1,123,543.20 = 434,100.80 : x
  2. Step 2: Convert to fraction form
    749,028.80/1,123,543.20 = 434,100.80/x
  3. Step 3: Cross multiply
    749,028.80x = 1,123,543.20 × 434,100.80
  4. Step 4: Simplify right side
    749,028.80x = 487,731,001,954.56
  5. Step 5: Solve for x
    x = 487,731,001,954.56/749,028.80
  6. Step 6: Final answer
    x = 651,151.20

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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.