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Finding the Fourth Proportional to 690,382.94, 952,535.94 and 445,263.98

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Solution

The fourth proportional to 690,382.94, 952,535.94 and 445,263.98 is: 614,340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,382.94 : 952,535.94 = 445,263.98 : x
  2. Step 2: Convert to fraction form
    690,382.94/952,535.94 = 445,263.98/x
  3. Step 3: Cross multiply
    690,382.94x = 952,535.94 × 445,263.98
  4. Step 4: Simplify right side
    690,382.94x = 424,129,938,974.76
  5. Step 5: Solve for x
    x = 424,129,938,974.76/690,382.94
  6. Step 6: Final answer
    x = 614,340.13

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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.