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Finding the Fourth Proportional to 522,818.40, 785,005.20 and 404,623.20

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Solution

The fourth proportional to 522,818.40, 785,005.20 and 404,623.20 is: 607,536.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,818.40 : 785,005.20 = 404,623.20 : x
  2. Step 2: Convert to fraction form
    522,818.40/785,005.20 = 404,623.20/x
  3. Step 3: Cross multiply
    522,818.40x = 785,005.20 × 404,623.20
  4. Step 4: Simplify right side
    522,818.40x = 317,631,316,040.64
  5. Step 5: Solve for x
    x = 317,631,316,040.64/522,818.40
  6. Step 6: Final answer
    x = 607,536.61

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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.