Home / 1,189,084.20-1,781,207.10-738,421.80

Finding the Fourth Proportional to 1,189,084.20, 1,781,207.10 and 738,421.80

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Solution

The fourth proportional to 1,189,084.20, 1,781,207.10 and 738,421.80 is: 1,106,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,084.20 : 1,781,207.10 = 738,421.80 : x
  2. Step 2: Convert to fraction form
    1,189,084.20/1,781,207.10 = 738,421.80/x
  3. Step 3: Cross multiply
    1,189,084.20x = 1,781,207.10 × 738,421.80
  4. Step 4: Simplify right side
    1,189,084.20x = 1,315,282,152,954.78
  5. Step 5: Solve for x
    x = 1,315,282,152,954.78/1,189,084.20
  6. Step 6: Final answer
    x = 1,106,130.38

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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.