Home / 860,404.40-1,290,606.60-545,217.20

Finding the Fourth Proportional to 860,404.40, 1,290,606.60 and 545,217.20

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Solution

The fourth proportional to 860,404.40, 1,290,606.60 and 545,217.20 is: 817,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,404.40 : 1,290,606.60 = 545,217.20 : x
  2. Step 2: Convert to fraction form
    860,404.40/1,290,606.60 = 545,217.20/x
  3. Step 3: Cross multiply
    860,404.40x = 1,290,606.60 × 545,217.20
  4. Step 4: Simplify right side
    860,404.40x = 703,660,916,753.52
  5. Step 5: Solve for x
    x = 703,660,916,753.52/860,404.40
  6. Step 6: Final answer
    x = 817,825.80

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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.