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Finding the Fourth Proportional to 666,766.02, 920,130 and 360,835.74

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Solution

The fourth proportional to 666,766.02, 920,130 and 360,835.74 is: 497,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,766.02 : 920,130 = 360,835.74 : x
  2. Step 2: Convert to fraction form
    666,766.02/920,130 = 360,835.74/x
  3. Step 3: Cross multiply
    666,766.02x = 920,130 × 360,835.74
  4. Step 4: Simplify right side
    666,766.02x = 332,015,789,446.20
  5. Step 5: Solve for x
    x = 332,015,789,446.20/666,766.02
  6. Step 6: Final answer
    x = 497,949.47

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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.