Home / 763,405.60-1,145,108.40-539,456.80

Finding the Fourth Proportional to 763,405.60, 1,145,108.40 and 539,456.80

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Solution

The fourth proportional to 763,405.60, 1,145,108.40 and 539,456.80 is: 809,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,405.60 : 1,145,108.40 = 539,456.80 : x
  2. Step 2: Convert to fraction form
    763,405.60/1,145,108.40 = 539,456.80/x
  3. Step 3: Cross multiply
    763,405.60x = 1,145,108.40 × 539,456.80
  4. Step 4: Simplify right side
    763,405.60x = 617,736,513,117.12
  5. Step 5: Solve for x
    x = 617,736,513,117.12/763,405.60
  6. Step 6: Final answer
    x = 809,185.20

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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.