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Finding the Fourth Proportional to 666,451.12, 919,699.75 and 360,526.73

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Solution

The fourth proportional to 666,451.12, 919,699.75 and 360,526.73 is: 497,525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,451.12 : 919,699.75 = 360,526.73 : x
  2. Step 2: Convert to fraction form
    666,451.12/919,699.75 = 360,526.73/x
  3. Step 3: Cross multiply
    666,451.12x = 919,699.75 × 360,526.73
  4. Step 4: Simplify right side
    666,451.12x = 331,576,343,449.32
  5. Step 5: Solve for x
    x = 331,576,343,449.32/666,451.12
  6. Step 6: Final answer
    x = 497,525.38

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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.