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Finding the Fourth Proportional to 435,329.40, 652,994.10 and 386,340.60

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Solution

The fourth proportional to 435,329.40, 652,994.10 and 386,340.60 is: 579,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,329.40 : 652,994.10 = 386,340.60 : x
  2. Step 2: Convert to fraction form
    435,329.40/652,994.10 = 386,340.60/x
  3. Step 3: Cross multiply
    435,329.40x = 652,994.10 × 386,340.60
  4. Step 4: Simplify right side
    435,329.40x = 252,278,132,390.46
  5. Step 5: Solve for x
    x = 252,278,132,390.46/435,329.40
  6. Step 6: Final answer
    x = 579,510.90

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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.