Home / 861,088,982.40-1,290,584,135.70-446,337,147.15

Finding the Fourth Proportional to 861,088,982.40, 1,290,584,135.70 and 446,337,147.15

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Solution

The fourth proportional to 861,088,982.40, 1,290,584,135.70 and 446,337,147.15 is: 668,961,806.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,088,982.40 : 1,290,584,135.70 = 446,337,147.15 : x
  2. Step 2: Convert to fraction form
    861,088,982.40/1,290,584,135.70 = 446,337,147.15/x
  3. Step 3: Cross multiply
    861,088,982.40x = 1,290,584,135.70 × 446,337,147.15
  4. Step 4: Simplify right side
    861,088,982.40x = 576,035,641,285,386,432
  5. Step 5: Solve for x
    x = 576,035,641,285,386,432/861,088,982.40
  6. Step 6: Final answer
    x = 668,961,806.57

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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.