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Finding the Fourth Proportional to 564,867.22, 779,515.80 and 310,218.42

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Solution

The fourth proportional to 564,867.22, 779,515.80 and 310,218.42 is: 428,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,867.22 : 779,515.80 = 310,218.42 : x
  2. Step 2: Convert to fraction form
    564,867.22/779,515.80 = 310,218.42/x
  3. Step 3: Cross multiply
    564,867.22x = 779,515.80 × 310,218.42
  4. Step 4: Simplify right side
    564,867.22x = 241,820,159,841.04
  5. Step 5: Solve for x
    x = 241,820,159,841.04/564,867.22
  6. Step 6: Final answer
    x = 428,100.89

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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.