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Finding the Fourth Proportional to 613,437.22, 920,343.62 and 314,129.72

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Solution

The fourth proportional to 613,437.22, 920,343.62 and 314,129.72 is: 471,290.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,437.22 : 920,343.62 = 314,129.72 : x
  2. Step 2: Convert to fraction form
    613,437.22/920,343.62 = 314,129.72/x
  3. Step 3: Cross multiply
    613,437.22x = 920,343.62 × 314,129.72
  4. Step 4: Simplify right side
    613,437.22x = 289,107,283,654.39
  5. Step 5: Solve for x
    x = 289,107,283,654.39/613,437.22
  6. Step 6: Final answer
    x = 471,290.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.