Home / 744,489.60-1,116,734.40-389,612.40

Finding the Fourth Proportional to 744,489.60, 1,116,734.40 and 389,612.40

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Solution

The fourth proportional to 744,489.60, 1,116,734.40 and 389,612.40 is: 584,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,489.60 : 1,116,734.40 = 389,612.40 : x
  2. Step 2: Convert to fraction form
    744,489.60/1,116,734.40 = 389,612.40/x
  3. Step 3: Cross multiply
    744,489.60x = 1,116,734.40 × 389,612.40
  4. Step 4: Simplify right side
    744,489.60x = 435,093,569,746.56
  5. Step 5: Solve for x
    x = 435,093,569,746.56/744,489.60
  6. Step 6: Final answer
    x = 584,418.60

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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.