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Finding the Fourth Proportional to 660,670.40, 991,005.60 and 656,733.80

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Solution

The fourth proportional to 660,670.40, 991,005.60 and 656,733.80 is: 985,100.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,670.40 : 991,005.60 = 656,733.80 : x
  2. Step 2: Convert to fraction form
    660,670.40/991,005.60 = 656,733.80/x
  3. Step 3: Cross multiply
    660,670.40x = 991,005.60 × 656,733.80
  4. Step 4: Simplify right side
    660,670.40x = 650,826,873,509.28
  5. Step 5: Solve for x
    x = 650,826,873,509.28/660,670.40
  6. Step 6: Final answer
    x = 985,100.70

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1.5x scale

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.