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Finding the Fourth Proportional to 566,486.12, 781,750.74 and 311,837.24

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Solution

The fourth proportional to 566,486.12, 781,750.74 and 311,837.24 is: 430,335.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,486.12 : 781,750.74 = 311,837.24 : x
  2. Step 2: Convert to fraction form
    566,486.12/781,750.74 = 311,837.24/x
  3. Step 3: Cross multiply
    566,486.12x = 781,750.74 × 311,837.24
  4. Step 4: Simplify right side
    566,486.12x = 243,778,993,129.56
  5. Step 5: Solve for x
    x = 243,778,993,129.56/566,486.12
  6. Step 6: Final answer
    x = 430,335.33

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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.