Home / 1,386,981.12-1,911,104.64-1,234,433.28

Finding the Fourth Proportional to 1,386,981.12, 1,911,104.64 and 1,234,433.28

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Solution

The fourth proportional to 1,386,981.12, 1,911,104.64 and 1,234,433.28 is: 1,700,910.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,981.12 : 1,911,104.64 = 1,234,433.28 : x
  2. Step 2: Convert to fraction form
    1,386,981.12/1,911,104.64 = 1,234,433.28/x
  3. Step 3: Cross multiply
    1,386,981.12x = 1,911,104.64 × 1,234,433.28
  4. Step 4: Simplify right side
    1,386,981.12x = 2,359,131,169,178.42
  5. Step 5: Solve for x
    x = 2,359,131,169,178.42/1,386,981.12
  6. Step 6: Final answer
    x = 1,700,910.80

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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.