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Finding the Fourth Proportional to 642,248.64, 886,265.01 and 351,802.14

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Solution

The fourth proportional to 642,248.64, 886,265.01 and 351,802.14 is: 485,466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,248.64 : 886,265.01 = 351,802.14 : x
  2. Step 2: Convert to fraction form
    642,248.64/886,265.01 = 351,802.14/x
  3. Step 3: Cross multiply
    642,248.64x = 886,265.01 × 351,802.14
  4. Step 4: Simplify right side
    642,248.64x = 311,789,923,801.63
  5. Step 5: Solve for x
    x = 311,789,923,801.63/642,248.64
  6. Step 6: Final answer
    x = 485,466.07

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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.