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Finding the Fourth Proportional to 612,360, 845,085.60 and 340,432.38

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Solution

The fourth proportional to 612,360, 845,085.60 and 340,432.38 is: 469,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,360 : 845,085.60 = 340,432.38 : x
  2. Step 2: Convert to fraction form
    612,360/845,085.60 = 340,432.38/x
  3. Step 3: Cross multiply
    612,360x = 845,085.60 × 340,432.38
  4. Step 4: Simplify right side
    612,360x = 287,694,502,111.73
  5. Step 5: Solve for x
    x = 287,694,502,111.73/612,360
  6. Step 6: Final answer
    x = 469,812.70

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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.