Home / 638,836.47-881,604.92-348,448.13

Finding the Fourth Proportional to 638,836.47, 881,604.92 and 348,448.13

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Solution

The fourth proportional to 638,836.47, 881,604.92 and 348,448.13 is: 480,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,836.47 : 881,604.92 = 348,448.13 : x
  2. Step 2: Convert to fraction form
    638,836.47/881,604.92 = 348,448.13/x
  3. Step 3: Cross multiply
    638,836.47x = 881,604.92 × 348,448.13
  4. Step 4: Simplify right side
    638,836.47x = 307,193,588,847.93
  5. Step 5: Solve for x
    x = 307,193,588,847.93/638,836.47
  6. Step 6: Final answer
    x = 480,864.20

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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.