Home / 1,278,905.40-1,919,232.90-710,285.40

Finding the Fourth Proportional to 1,278,905.40, 1,919,232.90 and 710,285.40

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Solution

The fourth proportional to 1,278,905.40, 1,919,232.90 and 710,285.40 is: 1,065,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,905.40 : 1,919,232.90 = 710,285.40 : x
  2. Step 2: Convert to fraction form
    1,278,905.40/1,919,232.90 = 710,285.40/x
  3. Step 3: Cross multiply
    1,278,905.40x = 1,919,232.90 × 710,285.40
  4. Step 4: Simplify right side
    1,278,905.40x = 1,363,203,108,069.66
  5. Step 5: Solve for x
    x = 1,363,203,108,069.66/1,278,905.40
  6. Step 6: Final answer
    x = 1,065,913.95

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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.