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Finding the Fourth Proportional to 660,283.35, 989,538.07 and 360,314.43

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Solution

The fourth proportional to 660,283.35, 989,538.07 and 360,314.43 is: 539,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,283.35 : 989,538.07 = 360,314.43 : x
  2. Step 2: Convert to fraction form
    660,283.35/989,538.07 = 360,314.43/x
  3. Step 3: Cross multiply
    660,283.35x = 989,538.07 × 360,314.43
  4. Step 4: Simplify right side
    660,283.35x = 356,544,845,655.35
  5. Step 5: Solve for x
    x = 356,544,845,655.35/660,283.35
  6. Step 6: Final answer
    x = 539,987.64

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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.