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Finding the Fourth Proportional to 478,295,998.40, 716,168,539.20 and 478,295,998.40

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Solution

The fourth proportional to 478,295,998.40, 716,168,539.20 and 478,295,998.40 is: 716,168,539.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,295,998.40 : 716,168,539.20 = 478,295,998.40 : x
  2. Step 2: Convert to fraction form
    478,295,998.40/716,168,539.20 = 478,295,998.40/x
  3. Step 3: Cross multiply
    478,295,998.40x = 716,168,539.20 × 478,295,998.40
  4. Step 4: Simplify right side
    478,295,998.40x = 342,540,546,479,333,568
  5. Step 5: Solve for x
    x = 342,540,546,479,333,568/478,295,998.40
  6. Step 6: Final answer
    x = 716,168,539.20

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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.