Home / 391,134,145.20-586,701,217.80-118,518,471.60

Finding the Fourth Proportional to 391,134,145.20, 586,701,217.80 and 118,518,471.60

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Solution

The fourth proportional to 391,134,145.20, 586,701,217.80 and 118,518,471.60 is: 177,777,707.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,134,145.20 : 586,701,217.80 = 118,518,471.60 : x
  2. Step 2: Convert to fraction form
    391,134,145.20/586,701,217.80 = 118,518,471.60/x
  3. Step 3: Cross multiply
    391,134,145.20x = 586,701,217.80 × 118,518,471.60
  4. Step 4: Simplify right side
    391,134,145.20x = 69,534,931,619,514,704
  5. Step 5: Solve for x
    x = 69,534,931,619,514,704/391,134,145.20
  6. Step 6: Final answer
    x = 177,777,707.40

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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.