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Finding the Fourth Proportional to 524,066.40, 784,285.20 and 313,855.20

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Solution

The fourth proportional to 524,066.40, 784,285.20 and 313,855.20 is: 469,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,066.40 : 784,285.20 = 313,855.20 : x
  2. Step 2: Convert to fraction form
    524,066.40/784,285.20 = 313,855.20/x
  3. Step 3: Cross multiply
    524,066.40x = 784,285.20 × 313,855.20
  4. Step 4: Simplify right side
    524,066.40x = 246,151,988,303.04
  5. Step 5: Solve for x
    x = 246,151,988,303.04/524,066.40
  6. Step 6: Final answer
    x = 469,696.18

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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.