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Finding the Fourth Proportional to 612,846.31, 917,632.18 and 359,918.95

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Solution

The fourth proportional to 612,846.31, 917,632.18 and 359,918.95 is: 538,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,846.31 : 917,632.18 = 359,918.95 : x
  2. Step 2: Convert to fraction form
    612,846.31/917,632.18 = 359,918.95/x
  3. Step 3: Cross multiply
    612,846.31x = 917,632.18 × 359,918.95
  4. Step 4: Simplify right side
    612,846.31x = 330,273,210,711.81
  5. Step 5: Solve for x
    x = 330,273,210,711.81/612,846.31
  6. Step 6: Final answer
    x = 538,916.86

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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.