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Finding the Fourth Proportional to 717,005.92, 989,058.18 and 448,267.36

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Solution

The fourth proportional to 717,005.92, 989,058.18 and 448,267.36 is: 618,352.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,005.92 : 989,058.18 = 448,267.36 : x
  2. Step 2: Convert to fraction form
    717,005.92/989,058.18 = 448,267.36/x
  3. Step 3: Cross multiply
    717,005.92x = 989,058.18 × 448,267.36
  4. Step 4: Simplify right side
    717,005.92x = 443,362,499,235.01
  5. Step 5: Solve for x
    x = 443,362,499,235.01/717,005.92
  6. Step 6: Final answer
    x = 618,352.63

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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.