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Finding the Fourth Proportional to 664,389.30, 928,045.50 and 664,389.30

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Solution

The fourth proportional to 664,389.30, 928,045.50 and 664,389.30 is: 928,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,389.30 : 928,045.50 = 664,389.30 : x
  2. Step 2: Convert to fraction form
    664,389.30/928,045.50 = 664,389.30/x
  3. Step 3: Cross multiply
    664,389.30x = 928,045.50 × 664,389.30
  4. Step 4: Simplify right side
    664,389.30x = 616,583,500,113.15
  5. Step 5: Solve for x
    x = 616,583,500,113.15/664,389.30
  6. Step 6: Final answer
    x = 928,045.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.