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Finding the Fourth Proportional to 736,891.60, 1,105,920.60 and 287,827.60

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Solution

The fourth proportional to 736,891.60, 1,105,920.60 and 287,827.60 is: 431,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,891.60 : 1,105,920.60 = 287,827.60 : x
  2. Step 2: Convert to fraction form
    736,891.60/1,105,920.60 = 287,827.60/x
  3. Step 3: Cross multiply
    736,891.60x = 1,105,920.60 × 287,827.60
  4. Step 4: Simplify right side
    736,891.60x = 318,314,472,088.56
  5. Step 5: Solve for x
    x = 318,314,472,088.56/736,891.60
  6. Step 6: Final answer
    x = 431,969.20

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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.