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Finding the Fourth Proportional to 647,812.60, 971,427.30 and 292,643.80

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Solution

The fourth proportional to 647,812.60, 971,427.30 and 292,643.80 is: 438,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,812.60 : 971,427.30 = 292,643.80 : x
  2. Step 2: Convert to fraction form
    647,812.60/971,427.30 = 292,643.80/x
  3. Step 3: Cross multiply
    647,812.60x = 971,427.30 × 292,643.80
  4. Step 4: Simplify right side
    647,812.60x = 284,282,176,495.74
  5. Step 5: Solve for x
    x = 284,282,176,495.74/647,812.60
  6. Step 6: Final answer
    x = 438,833.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.