Home / 764,897.80-1,147,298.10-259,457.80

Finding the Fourth Proportional to 764,897.80, 1,147,298.10 and 259,457.80

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Solution

The fourth proportional to 764,897.80, 1,147,298.10 and 259,457.80 is: 389,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,897.80 : 1,147,298.10 = 259,457.80 : x
  2. Step 2: Convert to fraction form
    764,897.80/1,147,298.10 = 259,457.80/x
  3. Step 3: Cross multiply
    764,897.80x = 1,147,298.10 × 259,457.80
  4. Step 4: Simplify right side
    764,897.80x = 297,675,440,970.18
  5. Step 5: Solve for x
    x = 297,675,440,970.18/764,897.80
  6. Step 6: Final answer
    x = 389,170.21

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Double scale
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Similar ratio
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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.