Home / 485,019,424.50-727,589,641.23-189,876,420.15

Finding the Fourth Proportional to 485,019,424.50, 727,589,641.23 and 189,876,420.15

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Solution

The fourth proportional to 485,019,424.50, 727,589,641.23 and 189,876,420.15 is: 284,838,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,019,424.50 : 727,589,641.23 = 189,876,420.15 : x
  2. Step 2: Convert to fraction form
    485,019,424.50/727,589,641.23 = 189,876,420.15/x
  3. Step 3: Cross multiply
    485,019,424.50x = 727,589,641.23 × 189,876,420.15
  4. Step 4: Simplify right side
    485,019,424.50x = 138,152,116,414,975,248
  5. Step 5: Solve for x
    x = 138,152,116,414,975,248/485,019,424.50
  6. Step 6: Final answer
    x = 284,838,316.65

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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.