Home / 1,011,528,007.20-1,517,334,001.20-321,415,783.20

Finding the Fourth Proportional to 1,011,528,007.20, 1,517,334,001.20 and 321,415,783.20

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Solution

The fourth proportional to 1,011,528,007.20, 1,517,334,001.20 and 321,415,783.20 is: 482,137,017.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,528,007.20 : 1,517,334,001.20 = 321,415,783.20 : x
  2. Step 2: Convert to fraction form
    1,011,528,007.20/1,517,334,001.20 = 321,415,783.20/x
  3. Step 3: Cross multiply
    1,011,528,007.20x = 1,517,334,001.20 × 321,415,783.20
  4. Step 4: Simplify right side
    1,011,528,007.20x = 487,695,096,371,687,744
  5. Step 5: Solve for x
    x = 487,695,096,371,687,744/1,011,528,007.20
  6. Step 6: Final answer
    x = 482,137,017.36

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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.