Home / 749,243.40-1,123,865.10-275,830.80

Finding the Fourth Proportional to 749,243.40, 1,123,865.10 and 275,830.80

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Solution

The fourth proportional to 749,243.40, 1,123,865.10 and 275,830.80 is: 413,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,243.40 : 1,123,865.10 = 275,830.80 : x
  2. Step 2: Convert to fraction form
    749,243.40/1,123,865.10 = 275,830.80/x
  3. Step 3: Cross multiply
    749,243.40x = 1,123,865.10 × 275,830.80
  4. Step 4: Simplify right side
    749,243.40x = 309,996,609,625.08
  5. Step 5: Solve for x
    x = 309,996,609,625.08/749,243.40
  6. Step 6: Final answer
    x = 413,746.20

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Half scale
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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.