Home / 828,139.80-1,241,432.10-648,125.40

Finding the Fourth Proportional to 828,139.80, 1,241,432.10 and 648,125.40

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Solution

The fourth proportional to 828,139.80, 1,241,432.10 and 648,125.40 is: 971,579.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,139.80 : 1,241,432.10 = 648,125.40 : x
  2. Step 2: Convert to fraction form
    828,139.80/1,241,432.10 = 648,125.40/x
  3. Step 3: Cross multiply
    828,139.80x = 1,241,432.10 × 648,125.40
  4. Step 4: Simplify right side
    828,139.80x = 804,603,676,385.34
  5. Step 5: Solve for x
    x = 804,603,676,385.34/828,139.80
  6. Step 6: Final answer
    x = 971,579.53

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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.