Home / 1,221,153.18-1,829,358.09-687,045.66

Finding the Fourth Proportional to 1,221,153.18, 1,829,358.09 and 687,045.66

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Solution

The fourth proportional to 1,221,153.18, 1,829,358.09 and 687,045.66 is: 1,029,234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,153.18 : 1,829,358.09 = 687,045.66 : x
  2. Step 2: Convert to fraction form
    1,221,153.18/1,829,358.09 = 687,045.66/x
  3. Step 3: Cross multiply
    1,221,153.18x = 1,829,358.09 × 687,045.66
  4. Step 4: Simplify right side
    1,221,153.18x = 1,256,852,536,320.39
  5. Step 5: Solve for x
    x = 1,256,852,536,320.39/1,221,153.18
  6. Step 6: Final answer
    x = 1,029,234.13

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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.