Home / 507,905.40-761,858.10-498,574.20

Finding the Fourth Proportional to 507,905.40, 761,858.10 and 498,574.20

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Solution

The fourth proportional to 507,905.40, 761,858.10 and 498,574.20 is: 747,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,905.40 : 761,858.10 = 498,574.20 : x
  2. Step 2: Convert to fraction form
    507,905.40/761,858.10 = 498,574.20/x
  3. Step 3: Cross multiply
    507,905.40x = 761,858.10 × 498,574.20
  4. Step 4: Simplify right side
    507,905.40x = 379,842,792,721.02
  5. Step 5: Solve for x
    x = 379,842,792,721.02/507,905.40
  6. Step 6: Final answer
    x = 747,861.30

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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.