Home / 730,489.60-1,095,734.40-431,113.60

Finding the Fourth Proportional to 730,489.60, 1,095,734.40 and 431,113.60

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Solution

The fourth proportional to 730,489.60, 1,095,734.40 and 431,113.60 is: 646,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,489.60 : 1,095,734.40 = 431,113.60 : x
  2. Step 2: Convert to fraction form
    730,489.60/1,095,734.40 = 431,113.60/x
  3. Step 3: Cross multiply
    730,489.60x = 1,095,734.40 × 431,113.60
  4. Step 4: Simplify right side
    730,489.60x = 472,386,001,827.84
  5. Step 5: Solve for x
    x = 472,386,001,827.84/730,489.60
  6. Step 6: Final answer
    x = 646,670.40

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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.