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Finding the Fourth Proportional to 570,616.48, 787,441.10 and 315,962.20

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Solution

The fourth proportional to 570,616.48, 787,441.10 and 315,962.20 is: 436,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,616.48 : 787,441.10 = 315,962.20 : x
  2. Step 2: Convert to fraction form
    570,616.48/787,441.10 = 315,962.20/x
  3. Step 3: Cross multiply
    570,616.48x = 787,441.10 × 315,962.20
  4. Step 4: Simplify right side
    570,616.48x = 248,801,618,778.01
  5. Step 5: Solve for x
    x = 248,801,618,778.01/570,616.48
  6. Step 6: Final answer
    x = 436,022.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.