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Finding the Fourth Proportional to 873,304.81, 1,205,063.13 and 491,323.39

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Solution

The fourth proportional to 873,304.81, 1,205,063.13 and 491,323.39 is: 677,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,304.81 : 1,205,063.13 = 491,323.39 : x
  2. Step 2: Convert to fraction form
    873,304.81/1,205,063.13 = 491,323.39/x
  3. Step 3: Cross multiply
    873,304.81x = 1,205,063.13 × 491,323.39
  4. Step 4: Simplify right side
    873,304.81x = 592,075,702,195.61
  5. Step 5: Solve for x
    x = 592,075,702,195.61/873,304.81
  6. Step 6: Final answer
    x = 677,971.42

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1.5x scale

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.