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Finding the Fourth Proportional to 570,412.10, 787,174.54 and 315,757.82

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Solution

The fourth proportional to 570,412.10, 787,174.54 and 315,757.82 is: 435,749.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,412.10 : 787,174.54 = 315,757.82 : x
  2. Step 2: Convert to fraction form
    570,412.10/787,174.54 = 315,757.82/x
  3. Step 3: Cross multiply
    570,412.10x = 787,174.54 × 315,757.82
  4. Step 4: Simplify right side
    570,412.10x = 248,556,516,709.90
  5. Step 5: Solve for x
    x = 248,556,516,709.90/570,412.10
  6. Step 6: Final answer
    x = 435,749.03

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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.