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Finding the Fourth Proportional to 664,487.52, 995,878.35 and 578,747.40

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Solution

The fourth proportional to 664,487.52, 995,878.35 and 578,747.40 is: 867,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,487.52 : 995,878.35 = 578,747.40 : x
  2. Step 2: Convert to fraction form
    664,487.52/995,878.35 = 578,747.40/x
  3. Step 3: Cross multiply
    664,487.52x = 995,878.35 × 578,747.40
  4. Step 4: Simplify right side
    664,487.52x = 576,362,005,778.79
  5. Step 5: Solve for x
    x = 576,362,005,778.79/664,487.52
  6. Step 6: Final answer
    x = 867,378.23

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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.