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Finding the Fourth Proportional to 631,345.74, 871,225.11 and 344,810.94

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Solution

The fourth proportional to 631,345.74, 871,225.11 and 344,810.94 is: 475,821.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,345.74 : 871,225.11 = 344,810.94 : x
  2. Step 2: Convert to fraction form
    631,345.74/871,225.11 = 344,810.94/x
  3. Step 3: Cross multiply
    631,345.74x = 871,225.11 × 344,810.94
  4. Step 4: Simplify right side
    631,345.74x = 300,407,949,130.70
  5. Step 5: Solve for x
    x = 300,407,949,130.70/631,345.74
  6. Step 6: Final answer
    x = 475,821.61

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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.