Home / 434,486,890.80-650,880,030.60-261,449,701.20

Finding the Fourth Proportional to 434,486,890.80, 650,880,030.60 and 261,449,701.20

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Solution

The fourth proportional to 434,486,890.80, 650,880,030.60 and 261,449,701.20 is: 391,662,885.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,486,890.80 : 650,880,030.60 = 261,449,701.20 : x
  2. Step 2: Convert to fraction form
    434,486,890.80/650,880,030.60 = 261,449,701.20/x
  3. Step 3: Cross multiply
    434,486,890.80x = 650,880,030.60 × 261,449,701.20
  4. Step 4: Simplify right side
    434,486,890.80x = 170,172,389,517,416,864
  5. Step 5: Solve for x
    x = 170,172,389,517,416,864/434,486,890.80
  6. Step 6: Final answer
    x = 391,662,885.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.