Home / 631,023,790.92-870,361,207.30-442,894,064.10

Finding the Fourth Proportional to 631,023,790.92, 870,361,207.30 and 442,894,064.10

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Solution

The fourth proportional to 631,023,790.92, 870,361,207.30 and 442,894,064.10 is: 610,876,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,023,790.92 : 870,361,207.30 = 442,894,064.10 : x
  2. Step 2: Convert to fraction form
    631,023,790.92/870,361,207.30 = 442,894,064.10/x
  3. Step 3: Cross multiply
    631,023,790.92x = 870,361,207.30 × 442,894,064.10
  4. Step 4: Simplify right side
    631,023,790.92x = 385,477,812,336,079,616
  5. Step 5: Solve for x
    x = 385,477,812,336,079,616/631,023,790.92
  6. Step 6: Final answer
    x = 610,876,828.87

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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.