Home / 866,052,001.80-1,299,078,002.70-778,376,046.60

Finding the Fourth Proportional to 866,052,001.80, 1,299,078,002.70 and 778,376,046.60

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Solution

The fourth proportional to 866,052,001.80, 1,299,078,002.70 and 778,376,046.60 is: 1,167,564,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,052,001.80 : 1,299,078,002.70 = 778,376,046.60 : x
  2. Step 2: Convert to fraction form
    866,052,001.80/1,299,078,002.70 = 778,376,046.60/x
  3. Step 3: Cross multiply
    866,052,001.80x = 1,299,078,002.70 × 778,376,046.60
  4. Step 4: Simplify right side
    866,052,001.80x = 1,011,171,199,966,650,240
  5. Step 5: Solve for x
    x = 1,011,171,199,966,650,240/866,052,001.80
  6. Step 6: Final answer
    x = 1,167,564,069.90

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1.5x scale

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.