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Finding the Fourth Proportional to 478,656,016.80, 717,480,140.40 and 187,410,602.40

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Solution

The fourth proportional to 478,656,016.80, 717,480,140.40 and 187,410,602.40 is: 280,918,615.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,656,016.80 : 717,480,140.40 = 187,410,602.40 : x
  2. Step 2: Convert to fraction form
    478,656,016.80/717,480,140.40 = 187,410,602.40/x
  3. Step 3: Cross multiply
    478,656,016.80x = 717,480,140.40 × 187,410,602.40
  4. Step 4: Simplify right side
    478,656,016.80x = 134,463,385,322,400,576
  5. Step 5: Solve for x
    x = 134,463,385,322,400,576/478,656,016.80
  6. Step 6: Final answer
    x = 280,918,615.04

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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.