Home / 866,052,002.80-1,299,078,004.20-778,376,047.60

Finding the Fourth Proportional to 866,052,002.80, 1,299,078,004.20 and 778,376,047.60

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Solution

The fourth proportional to 866,052,002.80, 1,299,078,004.20 and 778,376,047.60 is: 1,167,564,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,052,002.80 : 1,299,078,004.20 = 778,376,047.60 : x
  2. Step 2: Convert to fraction form
    866,052,002.80/1,299,078,004.20 = 778,376,047.60/x
  3. Step 3: Cross multiply
    866,052,002.80x = 1,299,078,004.20 × 778,376,047.60
  4. Step 4: Simplify right side
    866,052,002.80x = 1,011,171,202,433,292,288
  5. Step 5: Solve for x
    x = 1,011,171,202,433,292,288/866,052,002.80
  6. Step 6: Final answer
    x = 1,167,564,071.40

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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.