Home / 1,221,064.64-1,829,575.19-421,902.03

Finding the Fourth Proportional to 1,221,064.64, 1,829,575.19 and 421,902.03

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Solution

The fourth proportional to 1,221,064.64, 1,829,575.19 and 421,902.03 is: 632,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,064.64 : 1,829,575.19 = 421,902.03 : x
  2. Step 2: Convert to fraction form
    1,221,064.64/1,829,575.19 = 421,902.03/x
  3. Step 3: Cross multiply
    1,221,064.64x = 1,829,575.19 × 421,902.03
  4. Step 4: Simplify right side
    1,221,064.64x = 771,901,484,589.13
  5. Step 5: Solve for x
    x = 771,901,484,589.13/1,221,064.64
  6. Step 6: Final answer
    x = 632,154.48

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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.