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Finding the Fourth Proportional to 628,562, 867,415.56 and 360,445.52

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Solution

The fourth proportional to 628,562, 867,415.56 and 360,445.52 is: 497,414.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,562 : 867,415.56 = 360,445.52 : x
  2. Step 2: Convert to fraction form
    628,562/867,415.56 = 360,445.52/x
  3. Step 3: Cross multiply
    628,562x = 867,415.56 × 360,445.52
  4. Step 4: Simplify right side
    628,562x = 312,656,052,580.29
  5. Step 5: Solve for x
    x = 312,656,052,580.29/628,562
  6. Step 6: Final answer
    x = 497,414.82

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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.