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Finding the Fourth Proportional to 668,038.28, 921,889.46 and 362,113.48

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Solution

The fourth proportional to 668,038.28, 921,889.46 and 362,113.48 is: 499,714.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,038.28 : 921,889.46 = 362,113.48 : x
  2. Step 2: Convert to fraction form
    668,038.28/921,889.46 = 362,113.48/x
  3. Step 3: Cross multiply
    668,038.28x = 921,889.46 × 362,113.48
  4. Step 4: Simplify right side
    668,038.28x = 333,828,600,535.92
  5. Step 5: Solve for x
    x = 333,828,600,535.92/668,038.28
  6. Step 6: Final answer
    x = 499,714.78

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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.