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Finding the Fourth Proportional to 458,331.60, 687,497.40 and 309,032.40

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Solution

The fourth proportional to 458,331.60, 687,497.40 and 309,032.40 is: 463,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,331.60 : 687,497.40 = 309,032.40 : x
  2. Step 2: Convert to fraction form
    458,331.60/687,497.40 = 309,032.40/x
  3. Step 3: Cross multiply
    458,331.60x = 687,497.40 × 309,032.40
  4. Step 4: Simplify right side
    458,331.60x = 212,458,971,515.76
  5. Step 5: Solve for x
    x = 212,458,971,515.76/458,331.60
  6. Step 6: Final answer
    x = 463,548.60

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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.