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Finding the Fourth Proportional to 458,148.80, 686,056.80 and 437,153.60

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Solution

The fourth proportional to 458,148.80, 686,056.80 and 437,153.60 is: 654,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,148.80 : 686,056.80 = 437,153.60 : x
  2. Step 2: Convert to fraction form
    458,148.80/686,056.80 = 437,153.60/x
  3. Step 3: Cross multiply
    458,148.80x = 686,056.80 × 437,153.60
  4. Step 4: Simplify right side
    458,148.80x = 299,912,199,924.48
  5. Step 5: Solve for x
    x = 299,912,199,924.48/458,148.80
  6. Step 6: Final answer
    x = 654,617.45

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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.