Home / 522,302,933.16-720,778,023.92-287,348,553.20

Finding the Fourth Proportional to 522,302,933.16, 720,778,023.92 and 287,348,553.20

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Solution

The fourth proportional to 522,302,933.16, 720,778,023.92 and 287,348,553.20 is: 396,540,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,302,933.16 : 720,778,023.92 = 287,348,553.20 : x
  2. Step 2: Convert to fraction form
    522,302,933.16/720,778,023.92 = 287,348,553.20/x
  3. Step 3: Cross multiply
    522,302,933.16x = 720,778,023.92 × 287,348,553.20
  4. Step 4: Simplify right side
    522,302,933.16x = 207,114,522,354,287,296
  5. Step 5: Solve for x
    x = 207,114,522,354,287,296/522,302,933.16
  6. Step 6: Final answer
    x = 396,540,990.30

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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.