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Finding the Fourth Proportional to 518,228.52, 777,342.78 and 296,457

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Solution

The fourth proportional to 518,228.52, 777,342.78 and 296,457 is: 444,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,228.52 : 777,342.78 = 296,457 : x
  2. Step 2: Convert to fraction form
    518,228.52/777,342.78 = 296,457/x
  3. Step 3: Cross multiply
    518,228.52x = 777,342.78 × 296,457
  4. Step 4: Simplify right side
    518,228.52x = 230,448,708,530.46
  5. Step 5: Solve for x
    x = 230,448,708,530.46/518,228.52
  6. Step 6: Final answer
    x = 444,685.50

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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.