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Finding the Fourth Proportional to 630,516.08, 870,241.68 and 385,542.72

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Solution

The fourth proportional to 630,516.08, 870,241.68 and 385,542.72 is: 532,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,516.08 : 870,241.68 = 385,542.72 : x
  2. Step 2: Convert to fraction form
    630,516.08/870,241.68 = 385,542.72/x
  3. Step 3: Cross multiply
    630,516.08x = 870,241.68 × 385,542.72
  4. Step 4: Simplify right side
    630,516.08x = 335,515,344,364.57
  5. Step 5: Solve for x
    x = 335,515,344,364.57/630,516.08
  6. Step 6: Final answer
    x = 532,128.13

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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.