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Finding the Fourth Proportional to 501,243.48, 691,652.07 and 286,397.46

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Solution

The fourth proportional to 501,243.48, 691,652.07 and 286,397.46 is: 395,191.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,243.48 : 691,652.07 = 286,397.46 : x
  2. Step 2: Convert to fraction form
    501,243.48/691,652.07 = 286,397.46/x
  3. Step 3: Cross multiply
    501,243.48x = 691,652.07 × 286,397.46
  4. Step 4: Simplify right side
    501,243.48x = 198,087,396,051.74
  5. Step 5: Solve for x
    x = 198,087,396,051.74/501,243.48
  6. Step 6: Final answer
    x = 395,191.97

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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.