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Finding the Fourth Proportional to 961,657.20, 1,442,485.80 and 400,618.80

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Solution

The fourth proportional to 961,657.20, 1,442,485.80 and 400,618.80 is: 600,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,657.20 : 1,442,485.80 = 400,618.80 : x
  2. Step 2: Convert to fraction form
    961,657.20/1,442,485.80 = 400,618.80/x
  3. Step 3: Cross multiply
    961,657.20x = 1,442,485.80 × 400,618.80
  4. Step 4: Simplify right side
    961,657.20x = 577,886,930,213.04
  5. Step 5: Solve for x
    x = 577,886,930,213.04/961,657.20
  6. Step 6: Final answer
    x = 600,928.20

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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.