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Finding the Fourth Proportional to 607,510.71, 838,356.05 and 331,865.22

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Solution

The fourth proportional to 607,510.71, 838,356.05 and 331,865.22 is: 457,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,510.71 : 838,356.05 = 331,865.22 : x
  2. Step 2: Convert to fraction form
    607,510.71/838,356.05 = 331,865.22/x
  3. Step 3: Cross multiply
    607,510.71x = 838,356.05 × 331,865.22
  4. Step 4: Simplify right side
    607,510.71x = 278,221,213,312.26
  5. Step 5: Solve for x
    x = 278,221,213,312.26/607,510.71
  6. Step 6: Final answer
    x = 457,969.23

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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.