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Finding the Fourth Proportional to 636,359,719.71, 878,075,230.86 and 357,847,456.71

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Solution

The fourth proportional to 636,359,719.71, 878,075,230.86 and 357,847,456.71 is: 493,772,591.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,359,719.71 : 878,075,230.86 = 357,847,456.71 : x
  2. Step 2: Convert to fraction form
    636,359,719.71/878,075,230.86 = 357,847,456.71/x
  3. Step 3: Cross multiply
    636,359,719.71x = 878,075,230.86 × 357,847,456.71
  4. Step 4: Simplify right side
    636,359,719.71x = 314,216,988,163,297,088
  5. Step 5: Solve for x
    x = 314,216,988,163,297,088/636,359,719.71
  6. Step 6: Final answer
    x = 493,772,591.87

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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.