Home / 749,152.80-1,123,729.20-434,419.20

Finding the Fourth Proportional to 749,152.80, 1,123,729.20 and 434,419.20

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Solution

The fourth proportional to 749,152.80, 1,123,729.20 and 434,419.20 is: 651,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,152.80 : 1,123,729.20 = 434,419.20 : x
  2. Step 2: Convert to fraction form
    749,152.80/1,123,729.20 = 434,419.20/x
  3. Step 3: Cross multiply
    749,152.80x = 1,123,729.20 × 434,419.20
  4. Step 4: Simplify right side
    749,152.80x = 488,169,540,080.64
  5. Step 5: Solve for x
    x = 488,169,540,080.64/749,152.80
  6. Step 6: Final answer
    x = 651,628.80

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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.