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Finding the Fourth Proportional to 660,366.40, 990,549.60 and 656,429.80

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Solution

The fourth proportional to 660,366.40, 990,549.60 and 656,429.80 is: 984,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,366.40 : 990,549.60 = 656,429.80 : x
  2. Step 2: Convert to fraction form
    660,366.40/990,549.60 = 656,429.80/x
  3. Step 3: Cross multiply
    660,366.40x = 990,549.60 × 656,429.80
  4. Step 4: Simplify right side
    660,366.40x = 650,226,275,818.08
  5. Step 5: Solve for x
    x = 650,226,275,818.08/660,366.40
  6. Step 6: Final answer
    x = 984,644.70

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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.