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Finding the Fourth Proportional to 570,412.35, 787,174.88 and 315,758.07

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Solution

The fourth proportional to 570,412.35, 787,174.88 and 315,758.07 is: 435,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,412.35 : 787,174.88 = 315,758.07 : x
  2. Step 2: Convert to fraction form
    570,412.35/787,174.88 = 315,758.07/x
  3. Step 3: Cross multiply
    570,412.35x = 787,174.88 × 315,758.07
  4. Step 4: Simplify right side
    570,412.35x = 248,556,819,282.49
  5. Step 5: Solve for x
    x = 248,556,819,282.49/570,412.35
  6. Step 6: Final answer
    x = 435,749.36

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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.