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Finding the Fourth Proportional to 660,323.60, 989,610.60 and 585,090.80

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Solution

The fourth proportional to 660,323.60, 989,610.60 and 585,090.80 is: 876,861.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,323.60 : 989,610.60 = 585,090.80 : x
  2. Step 2: Convert to fraction form
    660,323.60/989,610.60 = 585,090.80/x
  3. Step 3: Cross multiply
    660,323.60x = 989,610.60 × 585,090.80
  4. Step 4: Simplify right side
    660,323.60x = 579,012,057,642.48
  5. Step 5: Solve for x
    x = 579,012,057,642.48/660,323.60
  6. Step 6: Final answer
    x = 876,861.07

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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.