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Finding the Fourth Proportional to 660,698.40, 991,047.60 and 544,058.40

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Solution

The fourth proportional to 660,698.40, 991,047.60 and 544,058.40 is: 816,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,698.40 : 991,047.60 = 544,058.40 : x
  2. Step 2: Convert to fraction form
    660,698.40/991,047.60 = 544,058.40/x
  3. Step 3: Cross multiply
    660,698.40x = 991,047.60 × 544,058.40
  4. Step 4: Simplify right side
    660,698.40x = 539,187,771,579.84
  5. Step 5: Solve for x
    x = 539,187,771,579.84/660,698.40
  6. Step 6: Final answer
    x = 816,087.60

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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.