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Finding the Fourth Proportional to 620,963.28, 931,150.08 and 283,903.92

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Solution

The fourth proportional to 620,963.28, 931,150.08 and 283,903.92 is: 425,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,963.28 : 931,150.08 = 283,903.92 : x
  2. Step 2: Convert to fraction form
    620,963.28/931,150.08 = 283,903.92/x
  3. Step 3: Cross multiply
    620,963.28x = 931,150.08 × 283,903.92
  4. Step 4: Simplify right side
    620,963.28x = 264,357,157,820.31
  5. Step 5: Solve for x
    x = 264,357,157,820.31/620,963.28
  6. Step 6: Final answer
    x = 425,721.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.