Home / 784,515,890.80-1,174,650,469.80-614,646,578.80

Finding the Fourth Proportional to 784,515,890.80, 1,174,650,469.80 and 614,646,578.80

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Solution

The fourth proportional to 784,515,890.80, 1,174,650,469.80 and 614,646,578.80 is: 920,306,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,515,890.80 : 1,174,650,469.80 = 614,646,578.80 : x
  2. Step 2: Convert to fraction form
    784,515,890.80/1,174,650,469.80 = 614,646,578.80/x
  3. Step 3: Cross multiply
    784,515,890.80x = 1,174,650,469.80 × 614,646,578.80
  4. Step 4: Simplify right side
    784,515,890.80x = 721,994,892,548,382,592
  5. Step 5: Solve for x
    x = 721,994,892,548,382,592/784,515,890.80
  6. Step 6: Final answer
    x = 920,306,269.15

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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.