Home / 687,419,543.60-948,719,748.18-386,054,382.05

Finding the Fourth Proportional to 687,419,543.60, 948,719,748.18 and 386,054,382.05

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Solution

The fourth proportional to 687,419,543.60, 948,719,748.18 and 386,054,382.05 is: 532,800,412.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,419,543.60 : 948,719,748.18 = 386,054,382.05 : x
  2. Step 2: Convert to fraction form
    687,419,543.60/948,719,748.18 = 386,054,382.05/x
  3. Step 3: Cross multiply
    687,419,543.60x = 948,719,748.18 × 386,054,382.05
  4. Step 4: Simplify right side
    687,419,543.60x = 366,257,416,117,517,888
  5. Step 5: Solve for x
    x = 366,257,416,117,517,888/687,419,543.60
  6. Step 6: Final answer
    x = 532,800,412.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.