Home / 991,057.80-1,486,586.70-359,992.20

Finding the Fourth Proportional to 991,057.80, 1,486,586.70 and 359,992.20

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Solution

The fourth proportional to 991,057.80, 1,486,586.70 and 359,992.20 is: 539,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,057.80 : 1,486,586.70 = 359,992.20 : x
  2. Step 2: Convert to fraction form
    991,057.80/1,486,586.70 = 359,992.20/x
  3. Step 3: Cross multiply
    991,057.80x = 1,486,586.70 × 359,992.20
  4. Step 4: Simplify right side
    991,057.80x = 535,159,616,623.74
  5. Step 5: Solve for x
    x = 535,159,616,623.74/991,057.80
  6. Step 6: Final answer
    x = 539,988.30

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Double scale
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Similar ratio
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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.