Home / 709,405.20-1,063,243.80-309,200.40

Finding the Fourth Proportional to 709,405.20, 1,063,243.80 and 309,200.40

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Solution

The fourth proportional to 709,405.20, 1,063,243.80 and 309,200.40 is: 463,424.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,405.20 : 1,063,243.80 = 309,200.40 : x
  2. Step 2: Convert to fraction form
    709,405.20/1,063,243.80 = 309,200.40/x
  3. Step 3: Cross multiply
    709,405.20x = 1,063,243.80 × 309,200.40
  4. Step 4: Simplify right side
    709,405.20x = 328,755,408,257.52
  5. Step 5: Solve for x
    x = 328,755,408,257.52/709,405.20
  6. Step 6: Final answer
    x = 463,424.02

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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.