Home / 1,011,528,008.20-1,517,334,002.70-321,415,784.20

Finding the Fourth Proportional to 1,011,528,008.20, 1,517,334,002.70 and 321,415,784.20

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Solution

The fourth proportional to 1,011,528,008.20, 1,517,334,002.70 and 321,415,784.20 is: 482,137,018.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,528,008.20 : 1,517,334,002.70 = 321,415,784.20 : x
  2. Step 2: Convert to fraction form
    1,011,528,008.20/1,517,334,002.70 = 321,415,784.20/x
  3. Step 3: Cross multiply
    1,011,528,008.20x = 1,517,334,002.70 × 321,415,784.20
  4. Step 4: Simplify right side
    1,011,528,008.20x = 487,695,098,371,145,408
  5. Step 5: Solve for x
    x = 487,695,098,371,145,408/1,011,528,008.20
  6. Step 6: Final answer
    x = 482,137,018.86

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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.