Home / 521,929.20-782,893.80-403,685.40

Finding the Fourth Proportional to 521,929.20, 782,893.80 and 403,685.40

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Solution

The fourth proportional to 521,929.20, 782,893.80 and 403,685.40 is: 605,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,929.20 : 782,893.80 = 403,685.40 : x
  2. Step 2: Convert to fraction form
    521,929.20/782,893.80 = 403,685.40/x
  3. Step 3: Cross multiply
    521,929.20x = 782,893.80 × 403,685.40
  4. Step 4: Simplify right side
    521,929.20x = 316,042,796,810.52
  5. Step 5: Solve for x
    x = 316,042,796,810.52/521,929.20
  6. Step 6: Final answer
    x = 605,528.10

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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.