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Finding the Fourth Proportional to 867,661.70, 1,301,686.95 and 335,135.30

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Solution

The fourth proportional to 867,661.70, 1,301,686.95 and 335,135.30 is: 502,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,661.70 : 1,301,686.95 = 335,135.30 : x
  2. Step 2: Convert to fraction form
    867,661.70/1,301,686.95 = 335,135.30/x
  3. Step 3: Cross multiply
    867,661.70x = 1,301,686.95 × 335,135.30
  4. Step 4: Simplify right side
    867,661.70x = 436,241,246,494.34
  5. Step 5: Solve for x
    x = 436,241,246,494.34/867,661.70
  6. Step 6: Final answer
    x = 502,778.04

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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.