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Finding the Fourth Proportional to 515,134.71, 772,652.79 and 315,352.26

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Solution

The fourth proportional to 515,134.71, 772,652.79 and 315,352.26 is: 472,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,134.71 : 772,652.79 = 315,352.26 : x
  2. Step 2: Convert to fraction form
    515,134.71/772,652.79 = 315,352.26/x
  3. Step 3: Cross multiply
    515,134.71x = 772,652.79 × 315,352.26
  4. Step 4: Simplify right side
    515,134.71x = 243,657,803,521.81
  5. Step 5: Solve for x
    x = 243,657,803,521.81/515,134.71
  6. Step 6: Final answer
    x = 472,998.23

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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.