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Finding the Fourth Proportional to 631,312.56, 871,210.32 and 344,832.64

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Solution

The fourth proportional to 631,312.56, 871,210.32 and 344,832.64 is: 475,868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,312.56 : 871,210.32 = 344,832.64 : x
  2. Step 2: Convert to fraction form
    631,312.56/871,210.32 = 344,832.64/x
  3. Step 3: Cross multiply
    631,312.56x = 871,210.32 × 344,832.64
  4. Step 4: Simplify right side
    631,312.56x = 300,421,754,640.85
  5. Step 5: Solve for x
    x = 300,421,754,640.85/631,312.56
  6. Step 6: Final answer
    x = 475,868.49

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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.