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Finding the Fourth Proportional to 492,281.69, 679,575.52 and 288,304.25

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Solution

The fourth proportional to 492,281.69, 679,575.52 and 288,304.25 is: 397,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,281.69 : 679,575.52 = 288,304.25 : x
  2. Step 2: Convert to fraction form
    492,281.69/679,575.52 = 288,304.25/x
  3. Step 3: Cross multiply
    492,281.69x = 679,575.52 × 288,304.25
  4. Step 4: Simplify right side
    492,281.69x = 195,924,507,574.46
  5. Step 5: Solve for x
    x = 195,924,507,574.46/492,281.69
  6. Step 6: Final answer
    x = 397,992.68

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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.