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Finding the Fourth Proportional to 662,649.80, 993,974.70 and 579,705.80

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Solution

The fourth proportional to 662,649.80, 993,974.70 and 579,705.80 is: 869,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,649.80 : 993,974.70 = 579,705.80 : x
  2. Step 2: Convert to fraction form
    662,649.80/993,974.70 = 579,705.80/x
  3. Step 3: Cross multiply
    662,649.80x = 993,974.70 × 579,705.80
  4. Step 4: Simplify right side
    662,649.80x = 576,212,898,643.26
  5. Step 5: Solve for x
    x = 576,212,898,643.26/662,649.80
  6. Step 6: Final answer
    x = 869,558.70

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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.