Home / 859,103.60-1,288,655.40-298,138.10

Finding the Fourth Proportional to 859,103.60, 1,288,655.40 and 298,138.10

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Solution

The fourth proportional to 859,103.60, 1,288,655.40 and 298,138.10 is: 447,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,103.60 : 1,288,655.40 = 298,138.10 : x
  2. Step 2: Convert to fraction form
    859,103.60/1,288,655.40 = 298,138.10/x
  3. Step 3: Cross multiply
    859,103.60x = 1,288,655.40 × 298,138.10
  4. Step 4: Simplify right side
    859,103.60x = 384,197,272,510.74
  5. Step 5: Solve for x
    x = 384,197,272,510.74/859,103.60
  6. Step 6: Final answer
    x = 447,207.15

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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.