Home / 748,855.80-1,123,283.70-434,122.20

Finding the Fourth Proportional to 748,855.80, 1,123,283.70 and 434,122.20

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Solution

The fourth proportional to 748,855.80, 1,123,283.70 and 434,122.20 is: 651,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,855.80 : 1,123,283.70 = 434,122.20 : x
  2. Step 2: Convert to fraction form
    748,855.80/1,123,283.70 = 434,122.20/x
  3. Step 3: Cross multiply
    748,855.80x = 1,123,283.70 × 434,122.20
  4. Step 4: Simplify right side
    748,855.80x = 487,642,391,068.14
  5. Step 5: Solve for x
    x = 487,642,391,068.14/748,855.80
  6. Step 6: Final answer
    x = 651,183.30

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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.