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Finding the Fourth Proportional to 1,397,304, 1,928,279.52 and 761,400

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Solution

The fourth proportional to 1,397,304, 1,928,279.52 and 761,400 is: 1,050,732

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,304 : 1,928,279.52 = 761,400 : x
  2. Step 2: Convert to fraction form
    1,397,304/1,928,279.52 = 761,400/x
  3. Step 3: Cross multiply
    1,397,304x = 1,928,279.52 × 761,400
  4. Step 4: Simplify right side
    1,397,304x = 1,468,192,026,528
  5. Step 5: Solve for x
    x = 1,468,192,026,528/1,397,304
  6. Step 6: Final answer
    x = 1,050,732

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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.