Home / 638,716.73-881,417.77-348,330.46

Finding the Fourth Proportional to 638,716.73, 881,417.77 and 348,330.46

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Solution

The fourth proportional to 638,716.73, 881,417.77 and 348,330.46 is: 480,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,716.73 : 881,417.77 = 348,330.46 : x
  2. Step 2: Convert to fraction form
    638,716.73/881,417.77 = 348,330.46/x
  3. Step 3: Cross multiply
    638,716.73x = 881,417.77 × 348,330.46
  4. Step 4: Simplify right side
    638,716.73x = 307,024,655,854.56
  5. Step 5: Solve for x
    x = 307,024,655,854.56/638,716.73
  6. Step 6: Final answer
    x = 480,689.86

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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.