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Finding the Fourth Proportional to 553,365.68, 763,673.13 and 338,438.25

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Solution

The fourth proportional to 553,365.68, 763,673.13 and 338,438.25 is: 467,062.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,365.68 : 763,673.13 = 338,438.25 : x
  2. Step 2: Convert to fraction form
    553,365.68/763,673.13 = 338,438.25/x
  3. Step 3: Cross multiply
    553,365.68x = 763,673.13 × 338,438.25
  4. Step 4: Simplify right side
    553,365.68x = 258,456,197,689.22
  5. Step 5: Solve for x
    x = 258,456,197,689.22/553,365.68
  6. Step 6: Final answer
    x = 467,062.21

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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.