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Finding the Fourth Proportional to 639,613.71, 882,744.32 and 364,038.59

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Solution

The fourth proportional to 639,613.71, 882,744.32 and 364,038.59 is: 502,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,613.71 : 882,744.32 = 364,038.59 : x
  2. Step 2: Convert to fraction form
    639,613.71/882,744.32 = 364,038.59/x
  3. Step 3: Cross multiply
    639,613.71x = 882,744.32 × 364,038.59
  4. Step 4: Simplify right side
    639,613.71x = 321,353,000,700.27
  5. Step 5: Solve for x
    x = 321,353,000,700.27/639,613.71
  6. Step 6: Final answer
    x = 502,417.31

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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.