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Finding the Fourth Proportional to 515,053.37, 710,760.54 and 285,607.01

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Solution

The fourth proportional to 515,053.37, 710,760.54 and 285,607.01 is: 394,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,053.37 : 710,760.54 = 285,607.01 : x
  2. Step 2: Convert to fraction form
    515,053.37/710,760.54 = 285,607.01/x
  3. Step 3: Cross multiply
    515,053.37x = 710,760.54 × 285,607.01
  4. Step 4: Simplify right side
    515,053.37x = 202,998,189,101.58
  5. Step 5: Solve for x
    x = 202,998,189,101.58/515,053.37
  6. Step 6: Final answer
    x = 394,130.39

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1.5x scale

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.