Home / 1,385,390.40-2,079,397.80-853,949.40

Finding the Fourth Proportional to 1,385,390.40, 2,079,397.80 and 853,949.40

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Solution

The fourth proportional to 1,385,390.40, 2,079,397.80 and 853,949.40 is: 1,281,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,390.40 : 2,079,397.80 = 853,949.40 : x
  2. Step 2: Convert to fraction form
    1,385,390.40/2,079,397.80 = 853,949.40/x
  3. Step 3: Cross multiply
    1,385,390.40x = 2,079,397.80 × 853,949.40
  4. Step 4: Simplify right side
    1,385,390.40x = 1,775,700,503,671.32
  5. Step 5: Solve for x
    x = 1,775,700,503,671.32/1,385,390.40
  6. Step 6: Final answer
    x = 1,281,732.94

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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.