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Finding the Fourth Proportional to 666,862.52, 920,270.20 and 360,938.84

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Solution

The fourth proportional to 666,862.52, 920,270.20 and 360,938.84 is: 498,095.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,862.52 : 920,270.20 = 360,938.84 : x
  2. Step 2: Convert to fraction form
    666,862.52/920,270.20 = 360,938.84/x
  3. Step 3: Cross multiply
    666,862.52x = 920,270.20 × 360,938.84
  4. Step 4: Simplify right side
    666,862.52x = 332,161,262,427.55
  5. Step 5: Solve for x
    x = 332,161,262,427.55/666,862.52
  6. Step 6: Final answer
    x = 498,095.56

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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.