Home / 1,289,892.40-1,934,838.60-991,877.20

Finding the Fourth Proportional to 1,289,892.40, 1,934,838.60 and 991,877.20

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Solution

The fourth proportional to 1,289,892.40, 1,934,838.60 and 991,877.20 is: 1,487,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,892.40 : 1,934,838.60 = 991,877.20 : x
  2. Step 2: Convert to fraction form
    1,289,892.40/1,934,838.60 = 991,877.20/x
  3. Step 3: Cross multiply
    1,289,892.40x = 1,934,838.60 × 991,877.20
  4. Step 4: Simplify right side
    1,289,892.40x = 1,919,122,293,019.92
  5. Step 5: Solve for x
    x = 1,919,122,293,019.92/1,289,892.40
  6. Step 6: Final answer
    x = 1,487,815.80

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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.