Home / 744,218.10-1,116,327.15-389,340.90

Finding the Fourth Proportional to 744,218.10, 1,116,327.15 and 389,340.90

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Solution

The fourth proportional to 744,218.10, 1,116,327.15 and 389,340.90 is: 584,011.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,218.10 : 1,116,327.15 = 389,340.90 : x
  2. Step 2: Convert to fraction form
    744,218.10/1,116,327.15 = 389,340.90/x
  3. Step 3: Cross multiply
    744,218.10x = 1,116,327.15 × 389,340.90
  4. Step 4: Simplify right side
    744,218.10x = 434,631,817,275.44
  5. Step 5: Solve for x
    x = 434,631,817,275.44/744,218.10
  6. Step 6: Final answer
    x = 584,011.35

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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.