Home / 478,448,869.50-660,259,704.78-258,432,295.50

Finding the Fourth Proportional to 478,448,869.50, 660,259,704.78 and 258,432,295.50

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Solution

The fourth proportional to 478,448,869.50, 660,259,704.78 and 258,432,295.50 is: 356,636,710.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,448,869.50 : 660,259,704.78 = 258,432,295.50 : x
  2. Step 2: Convert to fraction form
    478,448,869.50/660,259,704.78 = 258,432,295.50/x
  3. Step 3: Cross multiply
    478,448,869.50x = 660,259,704.78 × 258,432,295.50
  4. Step 4: Simplify right side
    478,448,869.50x = 170,632,431,132,447,712
  5. Step 5: Solve for x
    x = 170,632,431,132,447,712/478,448,869.50
  6. Step 6: Final answer
    x = 356,636,710.86

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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.