Home / 391,726,831.20-586,918,400.40-186,813,679.20

Finding the Fourth Proportional to 391,726,831.20, 586,918,400.40 and 186,813,679.20

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Solution

The fourth proportional to 391,726,831.20, 586,918,400.40 and 186,813,679.20 is: 279,900,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,726,831.20 : 586,918,400.40 = 186,813,679.20 : x
  2. Step 2: Convert to fraction form
    391,726,831.20/586,918,400.40 = 186,813,679.20/x
  3. Step 3: Cross multiply
    391,726,831.20x = 586,918,400.40 × 186,813,679.20
  4. Step 4: Simplify right side
    391,726,831.20x = 109,644,385,768,902,736
  5. Step 5: Solve for x
    x = 109,644,385,768,902,736/391,726,831.20
  6. Step 6: Final answer
    x = 279,900,116.70

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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.