Home / 805,680,065.80-1,208,520,098.70-422,677,851.40

Finding the Fourth Proportional to 805,680,065.80, 1,208,520,098.70 and 422,677,851.40

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Solution

The fourth proportional to 805,680,065.80, 1,208,520,098.70 and 422,677,851.40 is: 634,016,777.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,680,065.80 : 1,208,520,098.70 = 422,677,851.40 : x
  2. Step 2: Convert to fraction form
    805,680,065.80/1,208,520,098.70 = 422,677,851.40/x
  3. Step 3: Cross multiply
    805,680,065.80x = 1,208,520,098.70 × 422,677,851.40
  4. Step 4: Simplify right side
    805,680,065.80x = 510,814,678,692,231,936
  5. Step 5: Solve for x
    x = 510,814,678,692,231,936/805,680,065.80
  6. Step 6: Final answer
    x = 634,016,777.10

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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.