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Finding the Fourth Proportional to 417,802.51, 576,835.37 and 287,197.35

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Solution

The fourth proportional to 417,802.51, 576,835.37 and 287,197.35 is: 396,516.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,802.51 : 576,835.37 = 287,197.35 : x
  2. Step 2: Convert to fraction form
    417,802.51/576,835.37 = 287,197.35/x
  3. Step 3: Cross multiply
    417,802.51x = 576,835.37 × 287,197.35
  4. Step 4: Simplify right side
    417,802.51x = 165,665,588,743.63
  5. Step 5: Solve for x
    x = 165,665,588,743.63/417,802.51
  6. Step 6: Final answer
    x = 396,516.50

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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.