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Finding the Fourth Proportional to 458,616.60, 686,564.10 and 340,810.20

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Solution

The fourth proportional to 458,616.60, 686,564.10 and 340,810.20 is: 510,204.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,616.60 : 686,564.10 = 340,810.20 : x
  2. Step 2: Convert to fraction form
    458,616.60/686,564.10 = 340,810.20/x
  3. Step 3: Cross multiply
    458,616.60x = 686,564.10 × 340,810.20
  4. Step 4: Simplify right side
    458,616.60x = 233,988,048,233.82
  5. Step 5: Solve for x
    x = 233,988,048,233.82/458,616.60
  6. Step 6: Final answer
    x = 510,204.05

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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.