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Finding the Fourth Proportional to 666,862.10, 920,269.62 and 360,938.42

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Solution

The fourth proportional to 666,862.10, 920,269.62 and 360,938.42 is: 498,094.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,862.10 : 920,269.62 = 360,938.42 : x
  2. Step 2: Convert to fraction form
    666,862.10/920,269.62 = 360,938.42/x
  3. Step 3: Cross multiply
    666,862.10x = 920,269.62 × 360,938.42
  4. Step 4: Simplify right side
    666,862.10x = 332,160,664,054.72
  5. Step 5: Solve for x
    x = 332,160,664,054.72/666,862.10
  6. Step 6: Final answer
    x = 498,094.98

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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.