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Finding the Fourth Proportional to 899,078.78, 1,240,753.10 and 536,713.04

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Solution

The fourth proportional to 899,078.78, 1,240,753.10 and 536,713.04 is: 740,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,078.78 : 1,240,753.10 = 536,713.04 : x
  2. Step 2: Convert to fraction form
    899,078.78/1,240,753.10 = 536,713.04/x
  3. Step 3: Cross multiply
    899,078.78x = 1,240,753.10 × 536,713.04
  4. Step 4: Simplify right side
    899,078.78x = 665,928,365,403.30
  5. Step 5: Solve for x
    x = 665,928,365,403.30/899,078.78
  6. Step 6: Final answer
    x = 740,678.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.