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Finding the Fourth Proportional to 552,496.80, 762,437.86 and 310,779.38

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Solution

The fourth proportional to 552,496.80, 762,437.86 and 310,779.38 is: 428,871.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,496.80 : 762,437.86 = 310,779.38 : x
  2. Step 2: Convert to fraction form
    552,496.80/762,437.86 = 310,779.38/x
  3. Step 3: Cross multiply
    552,496.80x = 762,437.86 × 310,779.38
  4. Step 4: Simplify right side
    552,496.80x = 236,949,968,296.61
  5. Step 5: Solve for x
    x = 236,949,968,296.61/552,496.80
  6. Step 6: Final answer
    x = 428,871.21

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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.