Home / 727,681,200.80-1,091,521,801.20-210,128,525.60

Finding the Fourth Proportional to 727,681,200.80, 1,091,521,801.20 and 210,128,525.60

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Solution

The fourth proportional to 727,681,200.80, 1,091,521,801.20 and 210,128,525.60 is: 315,192,788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,681,200.80 : 1,091,521,801.20 = 210,128,525.60 : x
  2. Step 2: Convert to fraction form
    727,681,200.80/1,091,521,801.20 = 210,128,525.60/x
  3. Step 3: Cross multiply
    727,681,200.80x = 1,091,521,801.20 × 210,128,525.60
  4. Step 4: Simplify right side
    727,681,200.80x = 229,359,866,746,412,320
  5. Step 5: Solve for x
    x = 229,359,866,746,412,320/727,681,200.80
  6. Step 6: Final answer
    x = 315,192,788.40

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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.