Home / 426,011,314.97-639,409,787.22-216,069,345.31

Finding the Fourth Proportional to 426,011,314.97, 639,409,787.22 and 216,069,345.31

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Solution

The fourth proportional to 426,011,314.97, 639,409,787.22 and 216,069,345.31 is: 324,303,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,011,314.97 : 639,409,787.22 = 216,069,345.31 : x
  2. Step 2: Convert to fraction form
    426,011,314.97/639,409,787.22 = 216,069,345.31/x
  3. Step 3: Cross multiply
    426,011,314.97x = 639,409,787.22 × 216,069,345.31
  4. Step 4: Simplify right side
    426,011,314.97x = 138,156,854,109,431,808
  5. Step 5: Solve for x
    x = 138,156,854,109,431,808/426,011,314.97
  6. Step 6: Final answer
    x = 324,303,250.30

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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.