Home / 986,438,988.87-1,361,285,691.45-589,961,914.85

Finding the Fourth Proportional to 986,438,988.87, 1,361,285,691.45 and 589,961,914.85

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Solution

The fourth proportional to 986,438,988.87, 1,361,285,691.45 and 589,961,914.85 is: 814,147,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,438,988.87 : 1,361,285,691.45 = 589,961,914.85 : x
  2. Step 2: Convert to fraction form
    986,438,988.87/1,361,285,691.45 = 589,961,914.85/x
  3. Step 3: Cross multiply
    986,438,988.87x = 1,361,285,691.45 × 589,961,914.85
  4. Step 4: Simplify right side
    986,438,988.87x = 803,106,713,182,530,688
  5. Step 5: Solve for x
    x = 803,106,713,182,530,688/986,438,988.87
  6. Step 6: Final answer
    x = 814,147,374.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.