Home / 489,782,121.60-675,873,812.16-304,139,154.72

Finding the Fourth Proportional to 489,782,121.60, 675,873,812.16 and 304,139,154.72

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Solution

The fourth proportional to 489,782,121.60, 675,873,812.16 and 304,139,154.72 is: 419,696,189.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,782,121.60 : 675,873,812.16 = 304,139,154.72 : x
  2. Step 2: Convert to fraction form
    489,782,121.60/675,873,812.16 = 304,139,154.72/x
  3. Step 3: Cross multiply
    489,782,121.60x = 675,873,812.16 × 304,139,154.72
  4. Step 4: Simplify right side
    489,782,121.60x = 205,559,689,927,726,464
  5. Step 5: Solve for x
    x = 205,559,689,927,726,464/489,782,121.60
  6. Step 6: Final answer
    x = 419,696,189.11

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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.