Home / 744,947.10-1,117,420.65-390,069.90

Finding the Fourth Proportional to 744,947.10, 1,117,420.65 and 390,069.90

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Solution

The fourth proportional to 744,947.10, 1,117,420.65 and 390,069.90 is: 585,104.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,947.10 : 1,117,420.65 = 390,069.90 : x
  2. Step 2: Convert to fraction form
    744,947.10/1,117,420.65 = 390,069.90/x
  3. Step 3: Cross multiply
    744,947.10x = 1,117,420.65 × 390,069.90
  4. Step 4: Simplify right side
    744,947.10x = 435,872,161,203.44
  5. Step 5: Solve for x
    x = 435,872,161,203.44/744,947.10
  6. Step 6: Final answer
    x = 585,104.85

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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.