Home / 430,916.60-647,066.10-291,294.20

Finding the Fourth Proportional to 430,916.60, 647,066.10 and 291,294.20

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Solution

The fourth proportional to 430,916.60, 647,066.10 and 291,294.20 is: 437,408.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,916.60 : 647,066.10 = 291,294.20 : x
  2. Step 2: Convert to fraction form
    430,916.60/647,066.10 = 291,294.20/x
  3. Step 3: Cross multiply
    430,916.60x = 647,066.10 × 291,294.20
  4. Step 4: Simplify right side
    430,916.60x = 188,486,601,946.62
  5. Step 5: Solve for x
    x = 188,486,601,946.62/430,916.60
  6. Step 6: Final answer
    x = 437,408.54

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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.