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Finding the Fourth Proportional to 606,721.60, 910,276.80 and 407,267.20

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Solution

The fourth proportional to 606,721.60, 910,276.80 and 407,267.20 is: 611,031.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,721.60 : 910,276.80 = 407,267.20 : x
  2. Step 2: Convert to fraction form
    606,721.60/910,276.80 = 407,267.20/x
  3. Step 3: Cross multiply
    606,721.60x = 910,276.80 × 407,267.20
  4. Step 4: Simplify right side
    606,721.60x = 370,725,883,560.96
  5. Step 5: Solve for x
    x = 370,725,883,560.96/606,721.60
  6. Step 6: Final answer
    x = 611,031.29

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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.