Home / 738,304.04-1,018,860.46-398,772.30

Finding the Fourth Proportional to 738,304.04, 1,018,860.46 and 398,772.30

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Solution

The fourth proportional to 738,304.04, 1,018,860.46 and 398,772.30 is: 550,306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,304.04 : 1,018,860.46 = 398,772.30 : x
  2. Step 2: Convert to fraction form
    738,304.04/1,018,860.46 = 398,772.30/x
  3. Step 3: Cross multiply
    738,304.04x = 1,018,860.46 × 398,772.30
  4. Step 4: Simplify right side
    738,304.04x = 406,293,329,013.26
  5. Step 5: Solve for x
    x = 406,293,329,013.26/738,304.04
  6. Step 6: Final answer
    x = 550,306.25

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Double scale
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Similar ratio
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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.