Home / 805,680,028.80-1,208,520,043.20-422,677,814.40

Finding the Fourth Proportional to 805,680,028.80, 1,208,520,043.20 and 422,677,814.40

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Solution

The fourth proportional to 805,680,028.80, 1,208,520,043.20 and 422,677,814.40 is: 634,016,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,680,028.80 : 1,208,520,043.20 = 422,677,814.40 : x
  2. Step 2: Convert to fraction form
    805,680,028.80/1,208,520,043.20 = 422,677,814.40/x
  3. Step 3: Cross multiply
    805,680,028.80x = 1,208,520,043.20 × 422,677,814.40
  4. Step 4: Simplify right side
    805,680,028.80x = 510,814,610,518,369,600
  5. Step 5: Solve for x
    x = 510,814,610,518,369,600/805,680,028.80
  6. Step 6: Final answer
    x = 634,016,721.60

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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.