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Finding the Fourth Proportional to 458,793.70, 686,878.35 and 458,793.70

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Solution

The fourth proportional to 458,793.70, 686,878.35 and 458,793.70 is: 686,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,793.70 : 686,878.35 = 458,793.70 : x
  2. Step 2: Convert to fraction form
    458,793.70/686,878.35 = 458,793.70/x
  3. Step 3: Cross multiply
    458,793.70x = 686,878.35 × 458,793.70
  4. Step 4: Simplify right side
    458,793.70x = 315,135,459,646.40
  5. Step 5: Solve for x
    x = 315,135,459,646.40/458,793.70
  6. Step 6: Final answer
    x = 686,878.35

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1.5x scale

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.