Home / 426,528,067.20-639,792,100.80-353,826,938.40

Finding the Fourth Proportional to 426,528,067.20, 639,792,100.80 and 353,826,938.40

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Solution

The fourth proportional to 426,528,067.20, 639,792,100.80 and 353,826,938.40 is: 530,740,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,528,067.20 : 639,792,100.80 = 353,826,938.40 : x
  2. Step 2: Convert to fraction form
    426,528,067.20/639,792,100.80 = 353,826,938.40/x
  3. Step 3: Cross multiply
    426,528,067.20x = 639,792,100.80 × 353,826,938.40
  4. Step 4: Simplify right side
    426,528,067.20x = 226,375,680,238,568,160
  5. Step 5: Solve for x
    x = 226,375,680,238,568,160/426,528,067.20
  6. Step 6: Final answer
    x = 530,740,407.60

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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.