Home / 690,841.40-1,036,407.90-217,574.60

Finding the Fourth Proportional to 690,841.40, 1,036,407.90 and 217,574.60

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Solution

The fourth proportional to 690,841.40, 1,036,407.90 and 217,574.60 is: 326,407.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,841.40 : 1,036,407.90 = 217,574.60 : x
  2. Step 2: Convert to fraction form
    690,841.40/1,036,407.90 = 217,574.60/x
  3. Step 3: Cross multiply
    690,841.40x = 1,036,407.90 × 217,574.60
  4. Step 4: Simplify right side
    690,841.40x = 225,496,034,279.34
  5. Step 5: Solve for x
    x = 225,496,034,279.34/690,841.40
  6. Step 6: Final answer
    x = 326,407.82

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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.