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Finding the Fourth Proportional to 478,659.31, 660,719.02 and 427,583.34

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Solution

The fourth proportional to 478,659.31, 660,719.02 and 427,583.34 is: 590,216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,659.31 : 660,719.02 = 427,583.34 : x
  2. Step 2: Convert to fraction form
    478,659.31/660,719.02 = 427,583.34/x
  3. Step 3: Cross multiply
    478,659.31x = 660,719.02 × 427,583.34
  4. Step 4: Simplify right side
    478,659.31x = 282,512,445,373.13
  5. Step 5: Solve for x
    x = 282,512,445,373.13/478,659.31
  6. Step 6: Final answer
    x = 590,216.13

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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.