Home / 765,308.52-1,056,135.36-421,184.07

Finding the Fourth Proportional to 765,308.52, 1,056,135.36 and 421,184.07

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Solution

The fourth proportional to 765,308.52, 1,056,135.36 and 421,184.07 is: 581,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,308.52 : 1,056,135.36 = 421,184.07 : x
  2. Step 2: Convert to fraction form
    765,308.52/1,056,135.36 = 421,184.07/x
  3. Step 3: Cross multiply
    765,308.52x = 1,056,135.36 × 421,184.07
  4. Step 4: Simplify right side
    765,308.52x = 444,827,389,395.72
  5. Step 5: Solve for x
    x = 444,827,389,395.72/765,308.52
  6. Step 6: Final answer
    x = 581,239.30

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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.