Home / 1,231,838.40-1,847,584.80-390,475.20

Finding the Fourth Proportional to 1,231,838.40, 1,847,584.80 and 390,475.20

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Solution

The fourth proportional to 1,231,838.40, 1,847,584.80 and 390,475.20 is: 585,658.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,838.40 : 1,847,584.80 = 390,475.20 : x
  2. Step 2: Convert to fraction form
    1,231,838.40/1,847,584.80 = 390,475.20/x
  3. Step 3: Cross multiply
    1,231,838.40x = 1,847,584.80 × 390,475.20
  4. Step 4: Simplify right side
    1,231,838.40x = 721,436,044,296.96
  5. Step 5: Solve for x
    x = 721,436,044,296.96/1,231,838.40
  6. Step 6: Final answer
    x = 585,658.02

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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.