Home / 480,935.80-721,403.70-125,985.70

Finding the Fourth Proportional to 480,935.80, 721,403.70 and 125,985.70

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Solution

The fourth proportional to 480,935.80, 721,403.70 and 125,985.70 is: 188,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,935.80 : 721,403.70 = 125,985.70 : x
  2. Step 2: Convert to fraction form
    480,935.80/721,403.70 = 125,985.70/x
  3. Step 3: Cross multiply
    480,935.80x = 721,403.70 × 125,985.70
  4. Step 4: Simplify right side
    480,935.80x = 90,886,550,127.09
  5. Step 5: Solve for x
    x = 90,886,550,127.09/480,935.80
  6. Step 6: Final answer
    x = 188,978.55

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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.