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Finding the Fourth Proportional to 520,063.70, 779,577.15 and 239,090.90

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Solution

The fourth proportional to 520,063.70, 779,577.15 and 239,090.90 is: 358,398.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,063.70 : 779,577.15 = 239,090.90 : x
  2. Step 2: Convert to fraction form
    520,063.70/779,577.15 = 239,090.90/x
  3. Step 3: Cross multiply
    520,063.70x = 779,577.15 × 239,090.90
  4. Step 4: Simplify right side
    520,063.70x = 186,389,802,412.94
  5. Step 5: Solve for x
    x = 186,389,802,412.94/520,063.70
  6. Step 6: Final answer
    x = 358,398.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.