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Finding the Fourth Proportional to 478,609.64, 660,472.82 and 260,820.26

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Solution

The fourth proportional to 478,609.64, 660,472.82 and 260,820.26 is: 359,927.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,609.64 : 660,472.82 = 260,820.26 : x
  2. Step 2: Convert to fraction form
    478,609.64/660,472.82 = 260,820.26/x
  3. Step 3: Cross multiply
    478,609.64x = 660,472.82 × 260,820.26
  4. Step 4: Simplify right side
    478,609.64x = 172,264,692,635.33
  5. Step 5: Solve for x
    x = 172,264,692,635.33/478,609.64
  6. Step 6: Final answer
    x = 359,927.34

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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.