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Finding the Fourth Proportional to 666,380.91, 919,603.07 and 360,458.19

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Solution

The fourth proportional to 666,380.91, 919,603.07 and 360,458.19 is: 497,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,380.91 : 919,603.07 = 360,458.19 : x
  2. Step 2: Convert to fraction form
    666,380.91/919,603.07 = 360,458.19/x
  3. Step 3: Cross multiply
    666,380.91x = 919,603.07 × 360,458.19
  4. Step 4: Simplify right side
    666,380.91x = 331,478,456,328.35
  5. Step 5: Solve for x
    x = 331,478,456,328.35/666,380.91
  6. Step 6: Final answer
    x = 497,430.90

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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.