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Finding the Fourth Proportional to 631,290.66, 871,206.48 and 344,822.82

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Solution

The fourth proportional to 631,290.66, 871,206.48 and 344,822.82 is: 475,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,290.66 : 871,206.48 = 344,822.82 : x
  2. Step 2: Convert to fraction form
    631,290.66/871,206.48 = 344,822.82/x
  3. Step 3: Cross multiply
    631,290.66x = 871,206.48 × 344,822.82
  4. Step 4: Simplify right side
    631,290.66x = 300,411,875,235.87
  5. Step 5: Solve for x
    x = 300,411,875,235.87/631,290.66
  6. Step 6: Final answer
    x = 475,869.35

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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.