Home / 760,143.96-1,140,520.50-286,963.56

Finding the Fourth Proportional to 760,143.96, 1,140,520.50 and 286,963.56

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Solution

The fourth proportional to 760,143.96, 1,140,520.50 and 286,963.56 is: 430,560.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,143.96 : 1,140,520.50 = 286,963.56 : x
  2. Step 2: Convert to fraction form
    760,143.96/1,140,520.50 = 286,963.56/x
  3. Step 3: Cross multiply
    760,143.96x = 1,140,520.50 × 286,963.56
  4. Step 4: Simplify right side
    760,143.96x = 327,287,822,932.98
  5. Step 5: Solve for x
    x = 327,287,822,932.98/760,143.96
  6. Step 6: Final answer
    x = 430,560.32

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Half scale
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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.