Home / 1,320,618.92-1,818,373.50-1,031,398.76

Finding the Fourth Proportional to 1,320,618.92, 1,818,373.50 and 1,031,398.76

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Solution

The fourth proportional to 1,320,618.92, 1,818,373.50 and 1,031,398.76 is: 1,420,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,618.92 : 1,818,373.50 = 1,031,398.76 : x
  2. Step 2: Convert to fraction form
    1,320,618.92/1,818,373.50 = 1,031,398.76/x
  3. Step 3: Cross multiply
    1,320,618.92x = 1,818,373.50 × 1,031,398.76
  4. Step 4: Simplify right side
    1,320,618.92x = 1,875,468,173,116.86
  5. Step 5: Solve for x
    x = 1,875,468,173,116.86/1,320,618.92
  6. Step 6: Final answer
    x = 1,420,143.35

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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.