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Finding the Fourth Proportional to 720,016.40, 1,078,469.40 and 626,704.40

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Solution

The fourth proportional to 720,016.40, 1,078,469.40 and 626,704.40 is: 938,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,016.40 : 1,078,469.40 = 626,704.40 : x
  2. Step 2: Convert to fraction form
    720,016.40/1,078,469.40 = 626,704.40/x
  3. Step 3: Cross multiply
    720,016.40x = 1,078,469.40 × 626,704.40
  4. Step 4: Simplify right side
    720,016.40x = 675,881,518,245.36
  5. Step 5: Solve for x
    x = 675,881,518,245.36/720,016.40
  6. Step 6: Final answer
    x = 938,702.95

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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.