Home / 679,934.40-1,019,901.60-675,787.20

Finding the Fourth Proportional to 679,934.40, 1,019,901.60 and 675,787.20

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Solution

The fourth proportional to 679,934.40, 1,019,901.60 and 675,787.20 is: 1,013,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,934.40 : 1,019,901.60 = 675,787.20 : x
  2. Step 2: Convert to fraction form
    679,934.40/1,019,901.60 = 675,787.20/x
  3. Step 3: Cross multiply
    679,934.40x = 1,019,901.60 × 675,787.20
  4. Step 4: Simplify right side
    679,934.40x = 689,236,446,539.52
  5. Step 5: Solve for x
    x = 689,236,446,539.52/679,934.40
  6. Step 6: Final answer
    x = 1,013,680.80

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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.