Home / 727,680,007.80-1,091,520,011.70-210,127,332.60

Finding the Fourth Proportional to 727,680,007.80, 1,091,520,011.70 and 210,127,332.60

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Solution

The fourth proportional to 727,680,007.80, 1,091,520,011.70 and 210,127,332.60 is: 315,190,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,680,007.80 : 1,091,520,011.70 = 210,127,332.60 : x
  2. Step 2: Convert to fraction form
    727,680,007.80/1,091,520,011.70 = 210,127,332.60/x
  3. Step 3: Cross multiply
    727,680,007.80x = 1,091,520,011.70 × 210,127,332.60
  4. Step 4: Simplify right side
    727,680,007.80x = 229,358,188,538,041,792
  5. Step 5: Solve for x
    x = 229,358,188,538,041,792/727,680,007.80
  6. Step 6: Final answer
    x = 315,190,998.90

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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.