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Finding the Fourth Proportional to 709,709.80, 1,064,564.70 and 662,708.20

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Solution

The fourth proportional to 709,709.80, 1,064,564.70 and 662,708.20 is: 994,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,709.80 : 1,064,564.70 = 662,708.20 : x
  2. Step 2: Convert to fraction form
    709,709.80/1,064,564.70 = 662,708.20/x
  3. Step 3: Cross multiply
    709,709.80x = 1,064,564.70 × 662,708.20
  4. Step 4: Simplify right side
    709,709.80x = 705,495,756,120.54
  5. Step 5: Solve for x
    x = 705,495,756,120.54/709,709.80
  6. Step 6: Final answer
    x = 994,062.30

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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.