Home / 760,087.60-1,140,131.40-310,513.30

Finding the Fourth Proportional to 760,087.60, 1,140,131.40 and 310,513.30

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Solution

The fourth proportional to 760,087.60, 1,140,131.40 and 310,513.30 is: 465,769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,087.60 : 1,140,131.40 = 310,513.30 : x
  2. Step 2: Convert to fraction form
    760,087.60/1,140,131.40 = 310,513.30/x
  3. Step 3: Cross multiply
    760,087.60x = 1,140,131.40 × 310,513.30
  4. Step 4: Simplify right side
    760,087.60x = 354,025,963,447.62
  5. Step 5: Solve for x
    x = 354,025,963,447.62/760,087.60
  6. Step 6: Final answer
    x = 465,769.95

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Double scale
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Similar ratio
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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.