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Finding the Fourth Proportional to 638,276.55, 880,841.30 and 366,394.11

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Solution

The fourth proportional to 638,276.55, 880,841.30 and 366,394.11 is: 505,635.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,276.55 : 880,841.30 = 366,394.11 : x
  2. Step 2: Convert to fraction form
    638,276.55/880,841.30 = 366,394.11/x
  3. Step 3: Cross multiply
    638,276.55x = 880,841.30 × 366,394.11
  4. Step 4: Simplify right side
    638,276.55x = 322,735,064,164.74
  5. Step 5: Solve for x
    x = 322,735,064,164.74/638,276.55
  6. Step 6: Final answer
    x = 505,635.16

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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.