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Finding the Fourth Proportional to 562,705.45, 776,607.44 and 320,932.60

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Solution

The fourth proportional to 562,705.45, 776,607.44 and 320,932.60 is: 442,929.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,705.45 : 776,607.44 = 320,932.60 : x
  2. Step 2: Convert to fraction form
    562,705.45/776,607.44 = 320,932.60/x
  3. Step 3: Cross multiply
    562,705.45x = 776,607.44 × 320,932.60
  4. Step 4: Simplify right side
    562,705.45x = 249,238,643,759.36
  5. Step 5: Solve for x
    x = 249,238,643,759.36/562,705.45
  6. Step 6: Final answer
    x = 442,929.15

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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.