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Finding the Fourth Proportional to 514,490, 709,996.44 and 288,135.56

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Solution

The fourth proportional to 514,490, 709,996.44 and 288,135.56 is: 397,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,490 : 709,996.44 = 288,135.56 : x
  2. Step 2: Convert to fraction form
    514,490/709,996.44 = 288,135.56/x
  3. Step 3: Cross multiply
    514,490x = 709,996.44 × 288,135.56
  4. Step 4: Simplify right side
    514,490x = 204,575,221,837.41
  5. Step 5: Solve for x
    x = 204,575,221,837.41/514,490
  6. Step 6: Final answer
    x = 397,627.21

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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.