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Finding the Fourth Proportional to 668,030.20, 921,864.18 and 362,093.20

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Solution

The fourth proportional to 668,030.20, 921,864.18 and 362,093.20 is: 499,679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,030.20 : 921,864.18 = 362,093.20 : x
  2. Step 2: Convert to fraction form
    668,030.20/921,864.18 = 362,093.20/x
  3. Step 3: Cross multiply
    668,030.20x = 921,864.18 × 362,093.20
  4. Step 4: Simplify right side
    668,030.20x = 333,800,750,901.58
  5. Step 5: Solve for x
    x = 333,800,750,901.58/668,030.20
  6. Step 6: Final answer
    x = 499,679.13

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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.