Home / 721,574,042.20-995,774,910.10-391,549,181.24

Finding the Fourth Proportional to 721,574,042.20, 995,774,910.10 and 391,549,181.24

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Solution

The fourth proportional to 721,574,042.20, 995,774,910.10 and 391,549,181.24 is: 540,339,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,574,042.20 : 995,774,910.10 = 391,549,181.24 : x
  2. Step 2: Convert to fraction form
    721,574,042.20/995,774,910.10 = 391,549,181.24/x
  3. Step 3: Cross multiply
    721,574,042.20x = 995,774,910.10 × 391,549,181.24
  4. Step 4: Simplify right side
    721,574,042.20x = 389,894,850,748,989,632
  5. Step 5: Solve for x
    x = 389,894,850,748,989,632/721,574,042.20
  6. Step 6: Final answer
    x = 540,339,352.51

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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.