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Finding the Fourth Proportional to 666,594.38, 919,896.31 and 380,108.32

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Solution

The fourth proportional to 666,594.38, 919,896.31 and 380,108.32 is: 524,547.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,594.38 : 919,896.31 = 380,108.32 : x
  2. Step 2: Convert to fraction form
    666,594.38/919,896.31 = 380,108.32/x
  3. Step 3: Cross multiply
    666,594.38x = 919,896.31 × 380,108.32
  4. Step 4: Simplify right side
    666,594.38x = 349,660,239,143.69
  5. Step 5: Solve for x
    x = 349,660,239,143.69/666,594.38
  6. Step 6: Final answer
    x = 524,547.23

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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.