Home / 806,668,018.80-1,210,002,028.20-398,521,330.80

Finding the Fourth Proportional to 806,668,018.80, 1,210,002,028.20 and 398,521,330.80

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Solution

The fourth proportional to 806,668,018.80, 1,210,002,028.20 and 398,521,330.80 is: 597,781,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,668,018.80 : 1,210,002,028.20 = 398,521,330.80 : x
  2. Step 2: Convert to fraction form
    806,668,018.80/1,210,002,028.20 = 398,521,330.80/x
  3. Step 3: Cross multiply
    806,668,018.80x = 1,210,002,028.20 × 398,521,330.80
  4. Step 4: Simplify right side
    806,668,018.80x = 482,211,618,548,963,136
  5. Step 5: Solve for x
    x = 482,211,618,548,963,136/806,668,018.80
  6. Step 6: Final answer
    x = 597,781,996.20

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1.5x scale

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.