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Finding the Fourth Proportional to 713,271.20, 1,069,422 and 339,332

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Solution

The fourth proportional to 713,271.20, 1,069,422 and 339,332 is: 508,767.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,271.20 : 1,069,422 = 339,332 : x
  2. Step 2: Convert to fraction form
    713,271.20/1,069,422 = 339,332/x
  3. Step 3: Cross multiply
    713,271.20x = 1,069,422 × 339,332
  4. Step 4: Simplify right side
    713,271.20x = 362,889,106,104
  5. Step 5: Solve for x
    x = 362,889,106,104/713,271.20
  6. Step 6: Final answer
    x = 508,767.36

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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.