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Finding the Fourth Proportional to 559,259.13, 771,513.75 and 378,034.32

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Solution

The fourth proportional to 559,259.13, 771,513.75 and 378,034.32 is: 521,509.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,259.13 : 771,513.75 = 378,034.32 : x
  2. Step 2: Convert to fraction form
    559,259.13/771,513.75 = 378,034.32/x
  3. Step 3: Cross multiply
    559,259.13x = 771,513.75 × 378,034.32
  4. Step 4: Simplify right side
    559,259.13x = 291,658,675,851.90
  5. Step 5: Solve for x
    x = 291,658,675,851.90/559,259.13
  6. Step 6: Final answer
    x = 521,509.01

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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.