Home / 749,235.80-1,123,853.70-434,502.20

Finding the Fourth Proportional to 749,235.80, 1,123,853.70 and 434,502.20

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Solution

The fourth proportional to 749,235.80, 1,123,853.70 and 434,502.20 is: 651,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,235.80 : 1,123,853.70 = 434,502.20 : x
  2. Step 2: Convert to fraction form
    749,235.80/1,123,853.70 = 434,502.20/x
  3. Step 3: Cross multiply
    749,235.80x = 1,123,853.70 × 434,502.20
  4. Step 4: Simplify right side
    749,235.80x = 488,316,905,128.14
  5. Step 5: Solve for x
    x = 488,316,905,128.14/749,235.80
  6. Step 6: Final answer
    x = 651,753.30

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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.