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Finding the Fourth Proportional to 821,518, 1,232,417.12 and 366,274.44

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Solution

The fourth proportional to 821,518, 1,232,417.12 and 366,274.44 is: 549,474.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,518 : 1,232,417.12 = 366,274.44 : x
  2. Step 2: Convert to fraction form
    821,518/1,232,417.12 = 366,274.44/x
  3. Step 3: Cross multiply
    821,518x = 1,232,417.12 × 366,274.44
  4. Step 4: Simplify right side
    821,518x = 451,402,890,474.41
  5. Step 5: Solve for x
    x = 451,402,890,474.41/821,518
  6. Step 6: Final answer
    x = 549,474.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.