Home / 636,650,878.36-878,569,212.93-358,191,737.56

Finding the Fourth Proportional to 636,650,878.36, 878,569,212.93 and 358,191,737.56

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Solution

The fourth proportional to 636,650,878.36, 878,569,212.93 and 358,191,737.56 is: 494,299,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,650,878.36 : 878,569,212.93 = 358,191,737.56 : x
  2. Step 2: Convert to fraction form
    636,650,878.36/878,569,212.93 = 358,191,737.56/x
  3. Step 3: Cross multiply
    636,650,878.36x = 878,569,212.93 × 358,191,737.56
  4. Step 4: Simplify right side
    636,650,878.36x = 314,696,232,946,118,272
  5. Step 5: Solve for x
    x = 314,696,232,946,118,272/636,650,878.36
  6. Step 6: Final answer
    x = 494,299,534.71

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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.