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Finding the Fourth Proportional to 736,371.60, 1,105,140.60 and 287,307.60

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Solution

The fourth proportional to 736,371.60, 1,105,140.60 and 287,307.60 is: 431,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,371.60 : 1,105,140.60 = 287,307.60 : x
  2. Step 2: Convert to fraction form
    736,371.60/1,105,140.60 = 287,307.60/x
  3. Step 3: Cross multiply
    736,371.60x = 1,105,140.60 × 287,307.60
  4. Step 4: Simplify right side
    736,371.60x = 317,515,293,448.56
  5. Step 5: Solve for x
    x = 317,515,293,448.56/736,371.60
  6. Step 6: Final answer
    x = 431,188.95

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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.