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Finding the Fourth Proportional to 570,613.72, 787,446.90 and 315,964.92

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Solution

The fourth proportional to 570,613.72, 787,446.90 and 315,964.92 is: 436,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,613.72 : 787,446.90 = 315,964.92 : x
  2. Step 2: Convert to fraction form
    570,613.72/787,446.90 = 315,964.92/x
  3. Step 3: Cross multiply
    570,613.72x = 787,446.90 × 315,964.92
  4. Step 4: Simplify right side
    570,613.72x = 248,805,596,762.75
  5. Step 5: Solve for x
    x = 248,805,596,762.75/570,613.72
  6. Step 6: Final answer
    x = 436,031.57

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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.