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Finding the Fourth Proportional to 562,105.28, 775,685.64 and 320,465.72

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Solution

The fourth proportional to 562,105.28, 775,685.64 and 320,465.72 is: 442,231.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,105.28 : 775,685.64 = 320,465.72 : x
  2. Step 2: Convert to fraction form
    562,105.28/775,685.64 = 320,465.72/x
  3. Step 3: Cross multiply
    562,105.28x = 775,685.64 × 320,465.72
  4. Step 4: Simplify right side
    562,105.28x = 248,580,657,116.26
  5. Step 5: Solve for x
    x = 248,580,657,116.26/562,105.28
  6. Step 6: Final answer
    x = 442,231.49

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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.