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Finding the Fourth Proportional to 650,012.31, 896,990.49 and 378,088.02

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Solution

The fourth proportional to 650,012.31, 896,990.49 and 378,088.02 is: 521,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,012.31 : 896,990.49 = 378,088.02 : x
  2. Step 2: Convert to fraction form
    650,012.31/896,990.49 = 378,088.02/x
  3. Step 3: Cross multiply
    650,012.31x = 896,990.49 × 378,088.02
  4. Step 4: Simplify right side
    650,012.31x = 339,141,358,322.93
  5. Step 5: Solve for x
    x = 339,141,358,322.93/650,012.31
  6. Step 6: Final answer
    x = 521,746.05

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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.