Home / 820,296.60-1,230,444.90-519,802.80

Finding the Fourth Proportional to 820,296.60, 1,230,444.90 and 519,802.80

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Solution

The fourth proportional to 820,296.60, 1,230,444.90 and 519,802.80 is: 779,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,296.60 : 1,230,444.90 = 519,802.80 : x
  2. Step 2: Convert to fraction form
    820,296.60/1,230,444.90 = 519,802.80/x
  3. Step 3: Cross multiply
    820,296.60x = 1,230,444.90 × 519,802.80
  4. Step 4: Simplify right side
    820,296.60x = 639,588,704,265.72
  5. Step 5: Solve for x
    x = 639,588,704,265.72/820,296.60
  6. Step 6: Final answer
    x = 779,704.20

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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.