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Finding the Fourth Proportional to 618,688.60, 928,032.90 and 618,688.60

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Solution

The fourth proportional to 618,688.60, 928,032.90 and 618,688.60 is: 928,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,688.60 : 928,032.90 = 618,688.60 : x
  2. Step 2: Convert to fraction form
    618,688.60/928,032.90 = 618,688.60/x
  3. Step 3: Cross multiply
    618,688.60x = 928,032.90 × 618,688.60
  4. Step 4: Simplify right side
    618,688.60x = 574,163,375,654.94
  5. Step 5: Solve for x
    x = 574,163,375,654.94/618,688.60
  6. Step 6: Final answer
    x = 928,032.90

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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.