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Finding the Fourth Proportional to 767,807.10, 1,151,710.65 and 341,342.10

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Solution

The fourth proportional to 767,807.10, 1,151,710.65 and 341,342.10 is: 512,013.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,807.10 : 1,151,710.65 = 341,342.10 : x
  2. Step 2: Convert to fraction form
    767,807.10/1,151,710.65 = 341,342.10/x
  3. Step 3: Cross multiply
    767,807.10x = 1,151,710.65 × 341,342.10
  4. Step 4: Simplify right side
    767,807.10x = 393,127,331,863.37
  5. Step 5: Solve for x
    x = 393,127,331,863.37/767,807.10
  6. Step 6: Final answer
    x = 512,013.15

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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.