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Finding the Fourth Proportional to 554,966.38, 765,854.28 and 300,317.57

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Solution

The fourth proportional to 554,966.38, 765,854.28 and 300,317.57 is: 414,438.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,966.38 : 765,854.28 = 300,317.57 : x
  2. Step 2: Convert to fraction form
    554,966.38/765,854.28 = 300,317.57/x
  3. Step 3: Cross multiply
    554,966.38x = 765,854.28 × 300,317.57
  4. Step 4: Simplify right side
    554,966.38x = 229,999,496,343.70
  5. Step 5: Solve for x
    x = 229,999,496,343.70/554,966.38
  6. Step 6: Final answer
    x = 414,438.61

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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.