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Finding the Fourth Proportional to 612,386.46, 845,092.17 and 340,479.45

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Solution

The fourth proportional to 612,386.46, 845,092.17 and 340,479.45 is: 469,861.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,386.46 : 845,092.17 = 340,479.45 : x
  2. Step 2: Convert to fraction form
    612,386.46/845,092.17 = 340,479.45/x
  3. Step 3: Cross multiply
    612,386.46x = 845,092.17 × 340,479.45
  4. Step 4: Simplify right side
    612,386.46x = 287,736,517,240.91
  5. Step 5: Solve for x
    x = 287,736,517,240.91/612,386.46
  6. Step 6: Final answer
    x = 469,861.00

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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.