Home / 1,284,812.20-1,925,216.70-485,657.80

Finding the Fourth Proportional to 1,284,812.20, 1,925,216.70 and 485,657.80

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Solution

The fourth proportional to 1,284,812.20, 1,925,216.70 and 485,657.80 is: 727,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,812.20 : 1,925,216.70 = 485,657.80 : x
  2. Step 2: Convert to fraction form
    1,284,812.20/1,925,216.70 = 485,657.80/x
  3. Step 3: Cross multiply
    1,284,812.20x = 1,925,216.70 × 485,657.80
  4. Step 4: Simplify right side
    1,284,812.20x = 934,996,507,045.26
  5. Step 5: Solve for x
    x = 934,996,507,045.26/1,284,812.20
  6. Step 6: Final answer
    x = 727,730.10

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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.