Home / 760,101.60-1,139,439.60-287,104.80

Finding the Fourth Proportional to 760,101.60, 1,139,439.60 and 287,104.80

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Solution

The fourth proportional to 760,101.60, 1,139,439.60 and 287,104.80 is: 430,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,101.60 : 1,139,439.60 = 287,104.80 : x
  2. Step 2: Convert to fraction form
    760,101.60/1,139,439.60 = 287,104.80/x
  3. Step 3: Cross multiply
    760,101.60x = 1,139,439.60 × 287,104.80
  4. Step 4: Simplify right side
    760,101.60x = 327,138,578,470.08
  5. Step 5: Solve for x
    x = 327,138,578,470.08/760,101.60
  6. Step 6: Final answer
    x = 430,387.96

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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.