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Finding the Fourth Proportional to 631,520.24, 871,510.47 and 345,058.10

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Solution

The fourth proportional to 631,520.24, 871,510.47 and 345,058.10 is: 476,187.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,520.24 : 871,510.47 = 345,058.10 : x
  2. Step 2: Convert to fraction form
    631,520.24/871,510.47 = 345,058.10/x
  3. Step 3: Cross multiply
    631,520.24x = 871,510.47 × 345,058.10
  4. Step 4: Simplify right side
    631,520.24x = 300,721,746,908.31
  5. Step 5: Solve for x
    x = 300,721,746,908.31/631,520.24
  6. Step 6: Final answer
    x = 476,187.03

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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.