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Finding the Fourth Proportional to 569,850.31, 852,921.10 and 420,030.55

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Solution

The fourth proportional to 569,850.31, 852,921.10 and 420,030.55 is: 628,678.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,850.31 : 852,921.10 = 420,030.55 : x
  2. Step 2: Convert to fraction form
    569,850.31/852,921.10 = 420,030.55/x
  3. Step 3: Cross multiply
    569,850.31x = 852,921.10 × 420,030.55
  4. Step 4: Simplify right side
    569,850.31x = 358,252,918,739.61
  5. Step 5: Solve for x
    x = 358,252,918,739.61/569,850.31
  6. Step 6: Final answer
    x = 628,678.99

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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.