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Finding the Fourth Proportional to 638,017.71, 880,484.38 and 366,135.33

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Solution

The fourth proportional to 638,017.71, 880,484.38 and 366,135.33 is: 505,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,017.71 : 880,484.38 = 366,135.33 : x
  2. Step 2: Convert to fraction form
    638,017.71/880,484.38 = 366,135.33/x
  3. Step 3: Cross multiply
    638,017.71x = 880,484.38 × 366,135.33
  4. Step 4: Simplify right side
    638,017.71x = 322,376,441,417.62
  5. Step 5: Solve for x
    x = 322,376,441,417.62/638,017.71
  6. Step 6: Final answer
    x = 505,278.21

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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.