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Finding the Fourth Proportional to 631,897.92, 872,040.32 and 345,411.84

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Solution

The fourth proportional to 631,897.92, 872,040.32 and 345,411.84 is: 476,679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,897.92 : 872,040.32 = 345,411.84 : x
  2. Step 2: Convert to fraction form
    631,897.92/872,040.32 = 345,411.84/x
  3. Step 3: Cross multiply
    631,897.92x = 872,040.32 × 345,411.84
  4. Step 4: Simplify right side
    631,897.92x = 301,213,051,485.39
  5. Step 5: Solve for x
    x = 301,213,051,485.39/631,897.92
  6. Step 6: Final answer
    x = 476,679.92

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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.