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Finding the Fourth Proportional to 658,766.88, 908,747.70 and 400,722.72

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Solution

The fourth proportional to 658,766.88, 908,747.70 and 400,722.72 is: 552,784.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,766.88 : 908,747.70 = 400,722.72 : x
  2. Step 2: Convert to fraction form
    658,766.88/908,747.70 = 400,722.72/x
  3. Step 3: Cross multiply
    658,766.88x = 908,747.70 × 400,722.72
  4. Step 4: Simplify right side
    658,766.88x = 364,155,850,137.74
  5. Step 5: Solve for x
    x = 364,155,850,137.74/658,766.88
  6. Step 6: Final answer
    x = 552,784.09

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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.