Home / 646,737,647.20-970,248,188.40-319,369,991.20

Finding the Fourth Proportional to 646,737,647.20, 970,248,188.40 and 319,369,991.20

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Solution

The fourth proportional to 646,737,647.20, 970,248,188.40 and 319,369,991.20 is: 479,124,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,737,647.20 : 970,248,188.40 = 319,369,991.20 : x
  2. Step 2: Convert to fraction form
    646,737,647.20/970,248,188.40 = 319,369,991.20/x
  3. Step 3: Cross multiply
    646,737,647.20x = 970,248,188.40 × 319,369,991.20
  4. Step 4: Simplify right side
    646,737,647.20x = 309,868,155,391,123,904
  5. Step 5: Solve for x
    x = 309,868,155,391,123,904/646,737,647.20
  6. Step 6: Final answer
    x = 479,124,969.35

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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.