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Finding the Fourth Proportional to 515,053.62, 710,760.89 and 285,607.25

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Solution

The fourth proportional to 515,053.62, 710,760.89 and 285,607.25 is: 394,130.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,053.62 : 710,760.89 = 285,607.25 : x
  2. Step 2: Convert to fraction form
    515,053.62/710,760.89 = 285,607.25/x
  3. Step 3: Cross multiply
    515,053.62x = 710,760.89 × 285,607.25
  4. Step 4: Simplify right side
    515,053.62x = 202,998,463,200.45
  5. Step 5: Solve for x
    x = 202,998,463,200.45/515,053.62
  6. Step 6: Final answer
    x = 394,130.74

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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.