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Finding the Fourth Proportional to 478,616.80, 718,508.40 and 475,117.60

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Solution

The fourth proportional to 478,616.80, 718,508.40 and 475,117.60 is: 713,255.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,616.80 : 718,508.40 = 475,117.60 : x
  2. Step 2: Convert to fraction form
    478,616.80/718,508.40 = 475,117.60/x
  3. Step 3: Cross multiply
    478,616.80x = 718,508.40 × 475,117.60
  4. Step 4: Simplify right side
    478,616.80x = 341,375,986,587.84
  5. Step 5: Solve for x
    x = 341,375,986,587.84/478,616.80
  6. Step 6: Final answer
    x = 713,255.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.