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Finding the Fourth Proportional to 666,623.67, 920,060.41 and 376,323.72

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Solution

The fourth proportional to 666,623.67, 920,060.41 and 376,323.72 is: 519,394.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,623.67 : 920,060.41 = 376,323.72 : x
  2. Step 2: Convert to fraction form
    666,623.67/920,060.41 = 376,323.72/x
  3. Step 3: Cross multiply
    666,623.67x = 920,060.41 × 376,323.72
  4. Step 4: Simplify right side
    666,623.67x = 346,240,549,634.01
  5. Step 5: Solve for x
    x = 346,240,549,634.01/666,623.67
  6. Step 6: Final answer
    x = 519,394.33

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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.