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Finding the Fourth Proportional to 660,705.60, 991,058.40 and 587,222.40

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Solution

The fourth proportional to 660,705.60, 991,058.40 and 587,222.40 is: 880,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,705.60 : 991,058.40 = 587,222.40 : x
  2. Step 2: Convert to fraction form
    660,705.60/991,058.40 = 587,222.40/x
  3. Step 3: Cross multiply
    660,705.60x = 991,058.40 × 587,222.40
  4. Step 4: Simplify right side
    660,705.60x = 581,971,692,188.16
  5. Step 5: Solve for x
    x = 581,971,692,188.16/660,705.60
  6. Step 6: Final answer
    x = 880,833.60

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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.