Home / 850,689.60-1,276,207.20-289,780.80

Finding the Fourth Proportional to 850,689.60, 1,276,207.20 and 289,780.80

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Solution

The fourth proportional to 850,689.60, 1,276,207.20 and 289,780.80 is: 434,730.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,689.60 : 1,276,207.20 = 289,780.80 : x
  2. Step 2: Convert to fraction form
    850,689.60/1,276,207.20 = 289,780.80/x
  3. Step 3: Cross multiply
    850,689.60x = 1,276,207.20 × 289,780.80
  4. Step 4: Simplify right side
    850,689.60x = 369,820,343,381.76
  5. Step 5: Solve for x
    x = 369,820,343,381.76/850,689.60
  6. Step 6: Final answer
    x = 434,730.06

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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.