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Finding the Fourth Proportional to 458,793.40, 688,190.10 and 458,793.40

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Solution

The fourth proportional to 458,793.40, 688,190.10 and 458,793.40 is: 688,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,793.40 : 688,190.10 = 458,793.40 : x
  2. Step 2: Convert to fraction form
    458,793.40/688,190.10 = 458,793.40/x
  3. Step 3: Cross multiply
    458,793.40x = 688,190.10 × 458,793.40
  4. Step 4: Simplify right side
    458,793.40x = 315,737,075,825.34
  5. Step 5: Solve for x
    x = 315,737,075,825.34/458,793.40
  6. Step 6: Final answer
    x = 688,190.10

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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.