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Finding the Fourth Proportional to 609,143.94, 840,228.72 and 488,574.62

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Solution

The fourth proportional to 609,143.94, 840,228.72 and 488,574.62 is: 673,920.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,143.94 : 840,228.72 = 488,574.62 : x
  2. Step 2: Convert to fraction form
    609,143.94/840,228.72 = 488,574.62/x
  3. Step 3: Cross multiply
    609,143.94x = 840,228.72 × 488,574.62
  4. Step 4: Simplify right side
    609,143.94x = 410,514,427,587.09
  5. Step 5: Solve for x
    x = 410,514,427,587.09/609,143.94
  6. Step 6: Final answer
    x = 673,920.24

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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.