Home / 819,397,785.60-1,229,096,678.40-724,694,999.40

Finding the Fourth Proportional to 819,397,785.60, 1,229,096,678.40 and 724,694,999.40

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Solution

The fourth proportional to 819,397,785.60, 1,229,096,678.40 and 724,694,999.40 is: 1,087,042,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,397,785.60 : 1,229,096,678.40 = 724,694,999.40 : x
  2. Step 2: Convert to fraction form
    819,397,785.60/1,229,096,678.40 = 724,694,999.40/x
  3. Step 3: Cross multiply
    819,397,785.60x = 1,229,096,678.40 × 724,694,999.40
  4. Step 4: Simplify right side
    819,397,785.60x = 890,720,216,615,630,080
  5. Step 5: Solve for x
    x = 890,720,216,615,630,080/819,397,785.60
  6. Step 6: Final answer
    x = 1,087,042,499.10

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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.