Home / 686,612,896.40-1,029,919,344.60-611,786,003.60

Finding the Fourth Proportional to 686,612,896.40, 1,029,919,344.60 and 611,786,003.60

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Solution

The fourth proportional to 686,612,896.40, 1,029,919,344.60 and 611,786,003.60 is: 917,679,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,612,896.40 : 1,029,919,344.60 = 611,786,003.60 : x
  2. Step 2: Convert to fraction form
    686,612,896.40/1,029,919,344.60 = 611,786,003.60/x
  3. Step 3: Cross multiply
    686,612,896.40x = 1,029,919,344.60 × 611,786,003.60
  4. Step 4: Simplify right side
    686,612,896.40x = 630,090,239,863,165,312
  5. Step 5: Solve for x
    x = 630,090,239,863,165,312/686,612,896.40
  6. Step 6: Final answer
    x = 917,679,005.40

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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.