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Finding the Fourth Proportional to 666,690.99, 920,026.56 and 360,760.69

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Solution

The fourth proportional to 666,690.99, 920,026.56 and 360,760.69 is: 497,845.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,690.99 : 920,026.56 = 360,760.69 : x
  2. Step 2: Convert to fraction form
    666,690.99/920,026.56 = 360,760.69/x
  3. Step 3: Cross multiply
    666,690.99x = 920,026.56 × 360,760.69
  4. Step 4: Simplify right side
    666,690.99x = 331,909,416,603.93
  5. Step 5: Solve for x
    x = 331,909,416,603.93/666,690.99
  6. Step 6: Final answer
    x = 497,845.96

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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.