Home / 709,820.20-1,064,730.30-509,717.80

Finding the Fourth Proportional to 709,820.20, 1,064,730.30 and 509,717.80

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Solution

The fourth proportional to 709,820.20, 1,064,730.30 and 509,717.80 is: 764,576.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,820.20 : 1,064,730.30 = 509,717.80 : x
  2. Step 2: Convert to fraction form
    709,820.20/1,064,730.30 = 509,717.80/x
  3. Step 3: Cross multiply
    709,820.20x = 1,064,730.30 × 509,717.80
  4. Step 4: Simplify right side
    709,820.20x = 542,711,986,109.34
  5. Step 5: Solve for x
    x = 542,711,986,109.34/709,820.20
  6. Step 6: Final answer
    x = 764,576.70

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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.