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Finding the Fourth Proportional to 552,018.57, 761,786 and 306,997.91

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Solution

The fourth proportional to 552,018.57, 761,786 and 306,997.91 is: 423,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,018.57 : 761,786 = 306,997.91 : x
  2. Step 2: Convert to fraction form
    552,018.57/761,786 = 306,997.91/x
  3. Step 3: Cross multiply
    552,018.57x = 761,786 × 306,997.91
  4. Step 4: Simplify right side
    552,018.57x = 233,866,709,867.26
  5. Step 5: Solve for x
    x = 233,866,709,867.26/552,018.57
  6. Step 6: Final answer
    x = 423,657.32

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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.