Home / 429,976.64-644,966.40-130,459.68

Finding the Fourth Proportional to 429,976.64, 644,966.40 and 130,459.68

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Solution

The fourth proportional to 429,976.64, 644,966.40 and 130,459.68 is: 195,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,976.64 : 644,966.40 = 130,459.68 : x
  2. Step 2: Convert to fraction form
    429,976.64/644,966.40 = 130,459.68/x
  3. Step 3: Cross multiply
    429,976.64x = 644,966.40 × 130,459.68
  4. Step 4: Simplify right side
    429,976.64x = 84,142,110,154.75
  5. Step 5: Solve for x
    x = 84,142,110,154.75/429,976.64
  6. Step 6: Final answer
    x = 195,689.96

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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.