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Finding the Fourth Proportional to 668,665.48, 922,758.35 and 382,191.72

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Solution

The fourth proportional to 668,665.48, 922,758.35 and 382,191.72 is: 527,424.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,665.48 : 922,758.35 = 382,191.72 : x
  2. Step 2: Convert to fraction form
    668,665.48/922,758.35 = 382,191.72/x
  3. Step 3: Cross multiply
    668,665.48x = 922,758.35 × 382,191.72
  4. Step 4: Simplify right side
    668,665.48x = 352,670,600,930.86
  5. Step 5: Solve for x
    x = 352,670,600,930.86/668,665.48
  6. Step 6: Final answer
    x = 527,424.57

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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.