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Finding the Fourth Proportional to 631,240.64, 871,130.95 and 344,774.24

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Solution

The fourth proportional to 631,240.64, 871,130.95 and 344,774.24 is: 475,798.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,240.64 : 871,130.95 = 344,774.24 : x
  2. Step 2: Convert to fraction form
    631,240.64/871,130.95 = 344,774.24/x
  3. Step 3: Cross multiply
    631,240.64x = 871,130.95 × 344,774.24
  4. Step 4: Simplify right side
    631,240.64x = 300,343,507,325.03
  5. Step 5: Solve for x
    x = 300,343,507,325.03/631,240.64
  6. Step 6: Final answer
    x = 475,798.75

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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.