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Finding the Fourth Proportional to 684,441.16, 944,511.71 and 378,534.53

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Solution

The fourth proportional to 684,441.16, 944,511.71 and 378,534.53 is: 522,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,441.16 : 944,511.71 = 378,534.53 : x
  2. Step 2: Convert to fraction form
    684,441.16/944,511.71 = 378,534.53/x
  3. Step 3: Cross multiply
    684,441.16x = 944,511.71 × 378,534.53
  4. Step 4: Simplify right side
    684,441.16x = 357,530,296,692.95
  5. Step 5: Solve for x
    x = 357,530,296,692.95/684,441.16
  6. Step 6: Final answer
    x = 522,368.20

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Double scale
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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.