Home / 621,003.20-931,504.80-432,046.40

Finding the Fourth Proportional to 621,003.20, 931,504.80 and 432,046.40

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Solution

The fourth proportional to 621,003.20, 931,504.80 and 432,046.40 is: 648,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,003.20 : 931,504.80 = 432,046.40 : x
  2. Step 2: Convert to fraction form
    621,003.20/931,504.80 = 432,046.40/x
  3. Step 3: Cross multiply
    621,003.20x = 931,504.80 × 432,046.40
  4. Step 4: Simplify right side
    621,003.20x = 402,453,295,422.72
  5. Step 5: Solve for x
    x = 402,453,295,422.72/621,003.20
  6. Step 6: Final answer
    x = 648,069.60

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Double scale
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Similar ratio
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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.