Home / 890,263,951.76-1,228,711,368.96-493,914,636.80

Finding the Fourth Proportional to 890,263,951.76, 1,228,711,368.96 and 493,914,636.80

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Solution

The fourth proportional to 890,263,951.76, 1,228,711,368.96 and 493,914,636.80 is: 681,683,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,263,951.76 : 1,228,711,368.96 = 493,914,636.80 : x
  2. Step 2: Convert to fraction form
    890,263,951.76/1,228,711,368.96 = 493,914,636.80/x
  3. Step 3: Cross multiply
    890,263,951.76x = 1,228,711,368.96 × 493,914,636.80
  4. Step 4: Simplify right side
    890,263,951.76x = 606,878,529,531,909,248
  5. Step 5: Solve for x
    x = 606,878,529,531,909,248/890,263,951.76
  6. Step 6: Final answer
    x = 681,683,817.85

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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.