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Finding the Fourth Proportional to 478,059.20, 717,088.80 and 401,076.80

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Solution

The fourth proportional to 478,059.20, 717,088.80 and 401,076.80 is: 601,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,059.20 : 717,088.80 = 401,076.80 : x
  2. Step 2: Convert to fraction form
    478,059.20/717,088.80 = 401,076.80/x
  3. Step 3: Cross multiply
    478,059.20x = 717,088.80 × 401,076.80
  4. Step 4: Simplify right side
    478,059.20x = 287,607,681,219.84
  5. Step 5: Solve for x
    x = 287,607,681,219.84/478,059.20
  6. Step 6: Final answer
    x = 601,615.20

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Similar ratio
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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.