Home / 806,668,000.80-1,210,002,001.20-398,521,312.80

Finding the Fourth Proportional to 806,668,000.80, 1,210,002,001.20 and 398,521,312.80

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Solution

The fourth proportional to 806,668,000.80, 1,210,002,001.20 and 398,521,312.80 is: 597,781,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,668,000.80 : 1,210,002,001.20 = 398,521,312.80 : x
  2. Step 2: Convert to fraction form
    806,668,000.80/1,210,002,001.20 = 398,521,312.80/x
  3. Step 3: Cross multiply
    806,668,000.80x = 1,210,002,001.20 × 398,521,312.80
  4. Step 4: Simplify right side
    806,668,000.80x = 482,211,586,008,851,200
  5. Step 5: Solve for x
    x = 482,211,586,008,851,200/806,668,000.80
  6. Step 6: Final answer
    x = 597,781,969.20

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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.