Home / 772,871.40-1,159,883.10-398,701.80

Finding the Fourth Proportional to 772,871.40, 1,159,883.10 and 398,701.80

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Solution

The fourth proportional to 772,871.40, 1,159,883.10 and 398,701.80 is: 598,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,871.40 : 1,159,883.10 = 398,701.80 : x
  2. Step 2: Convert to fraction form
    772,871.40/1,159,883.10 = 398,701.80/x
  3. Step 3: Cross multiply
    772,871.40x = 1,159,883.10 × 398,701.80
  4. Step 4: Simplify right side
    772,871.40x = 462,447,479,759.58
  5. Step 5: Solve for x
    x = 462,447,479,759.58/772,871.40
  6. Step 6: Final answer
    x = 598,349.84

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Double scale
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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.