Home / 515,844.30-773,875.80-155,985.60

Finding the Fourth Proportional to 515,844.30, 773,875.80 and 155,985.60

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Solution

The fourth proportional to 515,844.30, 773,875.80 and 155,985.60 is: 234,011.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,844.30 : 773,875.80 = 155,985.60 : x
  2. Step 2: Convert to fraction form
    515,844.30/773,875.80 = 155,985.60/x
  3. Step 3: Cross multiply
    515,844.30x = 773,875.80 × 155,985.60
  4. Step 4: Simplify right side
    515,844.30x = 120,713,480,988.48
  5. Step 5: Solve for x
    x = 120,713,480,988.48/515,844.30
  6. Step 6: Final answer
    x = 234,011.47

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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.