Home / 390,521,625.98-582,332,136.20-387,016,477.34

Finding the Fourth Proportional to 390,521,625.98, 582,332,136.20 and 387,016,477.34

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Solution

The fourth proportional to 390,521,625.98, 582,332,136.20 and 387,016,477.34 is: 577,105,381.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,521,625.98 : 582,332,136.20 = 387,016,477.34 : x
  2. Step 2: Convert to fraction form
    390,521,625.98/582,332,136.20 = 387,016,477.34/x
  3. Step 3: Cross multiply
    390,521,625.98x = 582,332,136.20 × 387,016,477.34
  4. Step 4: Simplify right side
    390,521,625.98x = 225,372,131,990,605,664
  5. Step 5: Solve for x
    x = 225,372,131,990,605,664/390,521,625.98
  6. Step 6: Final answer
    x = 577,105,381.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.