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Finding the Fourth Proportional to 631,739.52, 871,798.50 and 345,259.53

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Solution

The fourth proportional to 631,739.52, 871,798.50 and 345,259.53 is: 476,457.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,739.52 : 871,798.50 = 345,259.53 : x
  2. Step 2: Convert to fraction form
    631,739.52/871,798.50 = 345,259.53/x
  3. Step 3: Cross multiply
    631,739.52x = 871,798.50 × 345,259.53
  4. Step 4: Simplify right side
    631,739.52x = 300,996,740,364.71
  5. Step 5: Solve for x
    x = 300,996,740,364.71/631,739.52
  6. Step 6: Final answer
    x = 476,457.04

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.