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Finding the Fourth Proportional to 562,215.60, 775,863.65 and 307,561.32

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Solution

The fourth proportional to 562,215.60, 775,863.65 and 307,561.32 is: 424,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,215.60 : 775,863.65 = 307,561.32 : x
  2. Step 2: Convert to fraction form
    562,215.60/775,863.65 = 307,561.32/x
  3. Step 3: Cross multiply
    562,215.60x = 775,863.65 × 307,561.32
  4. Step 4: Simplify right side
    562,215.60x = 238,625,646,796.21
  5. Step 5: Solve for x
    x = 238,625,646,796.21/562,215.60
  6. Step 6: Final answer
    x = 424,437.97

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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.