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Finding the Fourth Proportional to 668,036.28, 921,886.70 and 362,111.48

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Solution

The fourth proportional to 668,036.28, 921,886.70 and 362,111.48 is: 499,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,036.28 : 921,886.70 = 362,111.48 : x
  2. Step 2: Convert to fraction form
    668,036.28/921,886.70 = 362,111.48/x
  3. Step 3: Cross multiply
    668,036.28x = 921,886.70 × 362,111.48
  4. Step 4: Simplify right side
    668,036.28x = 333,825,757,329.32
  5. Step 5: Solve for x
    x = 333,825,757,329.32/668,036.28
  6. Step 6: Final answer
    x = 499,712.02

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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.