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Finding the Fourth Proportional to 666,288.92, 919,475.98 and 360,365.66

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Solution

The fourth proportional to 666,288.92, 919,475.98 and 360,365.66 is: 497,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,288.92 : 919,475.98 = 360,365.66 : x
  2. Step 2: Convert to fraction form
    666,288.92/919,475.98 = 360,365.66/x
  3. Step 3: Cross multiply
    666,288.92x = 919,475.98 × 360,365.66
  4. Step 4: Simplify right side
    666,288.92x = 331,347,568,386.85
  5. Step 5: Solve for x
    x = 331,347,568,386.85/666,288.92
  6. Step 6: Final answer
    x = 497,303.13

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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.