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Finding the Fourth Proportional to 507,639.80, 761,459.70 and 350,046.20

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Solution

The fourth proportional to 507,639.80, 761,459.70 and 350,046.20 is: 525,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,639.80 : 761,459.70 = 350,046.20 : x
  2. Step 2: Convert to fraction form
    507,639.80/761,459.70 = 350,046.20/x
  3. Step 3: Cross multiply
    507,639.80x = 761,459.70 × 350,046.20
  4. Step 4: Simplify right side
    507,639.80x = 266,546,074,438.14
  5. Step 5: Solve for x
    x = 266,546,074,438.14/507,639.80
  6. Step 6: Final answer
    x = 525,069.30

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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.