Home / 676,280.90-1,013,689.11-439,793.30

Finding the Fourth Proportional to 676,280.90, 1,013,689.11 and 439,793.30

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Solution

The fourth proportional to 676,280.90, 1,013,689.11 and 439,793.30 is: 659,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,280.90 : 1,013,689.11 = 439,793.30 : x
  2. Step 2: Convert to fraction form
    676,280.90/1,013,689.11 = 439,793.30/x
  3. Step 3: Cross multiply
    676,280.90x = 1,013,689.11 × 439,793.30
  4. Step 4: Simplify right side
    676,280.90x = 445,813,678,860.96
  5. Step 5: Solve for x
    x = 445,813,678,860.96/676,280.90
  6. Step 6: Final answer
    x = 659,213.77

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1.5x scale

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.