Home / 1,121,238,093.20-1,681,857,139.80-538,831,901.30

Finding the Fourth Proportional to 1,121,238,093.20, 1,681,857,139.80 and 538,831,901.30

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Solution

The fourth proportional to 1,121,238,093.20, 1,681,857,139.80 and 538,831,901.30 is: 808,247,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,238,093.20 : 1,681,857,139.80 = 538,831,901.30 : x
  2. Step 2: Convert to fraction form
    1,121,238,093.20/1,681,857,139.80 = 538,831,901.30/x
  3. Step 3: Cross multiply
    1,121,238,093.20x = 1,681,857,139.80 × 538,831,901.30
  4. Step 4: Simplify right side
    1,121,238,093.20x = 906,238,280,353,413,760
  5. Step 5: Solve for x
    x = 906,238,280,353,413,760/1,121,238,093.20
  6. Step 6: Final answer
    x = 808,247,851.95

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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.