Home / 563,398.12-777,490.09-305,274.87

Finding the Fourth Proportional to 563,398.12, 777,490.09 and 305,274.87

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Solution

The fourth proportional to 563,398.12, 777,490.09 and 305,274.87 is: 421,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,398.12 : 777,490.09 = 305,274.87 : x
  2. Step 2: Convert to fraction form
    563,398.12/777,490.09 = 305,274.87/x
  3. Step 3: Cross multiply
    563,398.12x = 777,490.09 × 305,274.87
  4. Step 4: Simplify right side
    563,398.12x = 237,348,184,918.33
  5. Step 5: Solve for x
    x = 237,348,184,918.33/563,398.12
  6. Step 6: Final answer
    x = 421,279.69

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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.