Home / 1,398,487.20-2,097,730.80-512,368.80

Finding the Fourth Proportional to 1,398,487.20, 2,097,730.80 and 512,368.80

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Solution

The fourth proportional to 1,398,487.20, 2,097,730.80 and 512,368.80 is: 768,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,487.20 : 2,097,730.80 = 512,368.80 : x
  2. Step 2: Convert to fraction form
    1,398,487.20/2,097,730.80 = 512,368.80/x
  3. Step 3: Cross multiply
    1,398,487.20x = 2,097,730.80 × 512,368.80
  4. Step 4: Simplify right side
    1,398,487.20x = 1,074,811,812,719.04
  5. Step 5: Solve for x
    x = 1,074,811,812,719.04/1,398,487.20
  6. Step 6: Final answer
    x = 768,553.20

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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.