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Finding the Fourth Proportional to 570,771.38, 787,654.85 and 316,117.10

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Solution

The fourth proportional to 570,771.38, 787,654.85 and 316,117.10 is: 436,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,771.38 : 787,654.85 = 316,117.10 : x
  2. Step 2: Convert to fraction form
    570,771.38/787,654.85 = 316,117.10/x
  3. Step 3: Cross multiply
    570,771.38x = 787,654.85 × 316,117.10
  4. Step 4: Simplify right side
    570,771.38x = 248,991,161,464.08
  5. Step 5: Solve for x
    x = 248,991,161,464.08/570,771.38
  6. Step 6: Final answer
    x = 436,236.25

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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.