Home / 636,650,878.86-878,569,213.62-358,191,738.06

Finding the Fourth Proportional to 636,650,878.86, 878,569,213.62 and 358,191,738.06

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Solution

The fourth proportional to 636,650,878.86, 878,569,213.62 and 358,191,738.06 is: 494,299,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,650,878.86 : 878,569,213.62 = 358,191,738.06 : x
  2. Step 2: Convert to fraction form
    636,650,878.86/878,569,213.62 = 358,191,738.06/x
  3. Step 3: Cross multiply
    636,650,878.86x = 878,569,213.62 × 358,191,738.06
  4. Step 4: Simplify right side
    636,650,878.86x = 314,696,233,632,555,200
  5. Step 5: Solve for x
    x = 314,696,233,632,555,200/636,650,878.86
  6. Step 6: Final answer
    x = 494,299,535.40

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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.