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Finding the Fourth Proportional to 642,339.63, 963,194.16 and 317,752.71

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Solution

The fourth proportional to 642,339.63, 963,194.16 and 317,752.71 is: 476,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,339.63 : 963,194.16 = 317,752.71 : x
  2. Step 2: Convert to fraction form
    642,339.63/963,194.16 = 317,752.71/x
  3. Step 3: Cross multiply
    642,339.63x = 963,194.16 × 317,752.71
  4. Step 4: Simplify right side
    642,339.63x = 306,057,554,596.17
  5. Step 5: Solve for x
    x = 306,057,554,596.17/642,339.63
  6. Step 6: Final answer
    x = 476,473.10

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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.