Home / 721,574,041.20-995,774,908.72-391,549,180.24

Finding the Fourth Proportional to 721,574,041.20, 995,774,908.72 and 391,549,180.24

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Solution

The fourth proportional to 721,574,041.20, 995,774,908.72 and 391,549,180.24 is: 540,339,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,574,041.20 : 995,774,908.72 = 391,549,180.24 : x
  2. Step 2: Convert to fraction form
    721,574,041.20/995,774,908.72 = 391,549,180.24/x
  3. Step 3: Cross multiply
    721,574,041.20x = 995,774,908.72 × 391,549,180.24
  4. Step 4: Simplify right side
    721,574,041.20x = 389,894,849,212,876,864
  5. Step 5: Solve for x
    x = 389,894,849,212,876,864/721,574,041.20
  6. Step 6: Final answer
    x = 540,339,351.13

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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.