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Finding the Fourth Proportional to 528,035.90, 792,053.85 and 403,619.90

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Solution

The fourth proportional to 528,035.90, 792,053.85 and 403,619.90 is: 605,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,035.90 : 792,053.85 = 403,619.90 : x
  2. Step 2: Convert to fraction form
    528,035.90/792,053.85 = 403,619.90/x
  3. Step 3: Cross multiply
    528,035.90x = 792,053.85 × 403,619.90
  4. Step 4: Simplify right side
    528,035.90x = 319,688,695,731.62
  5. Step 5: Solve for x
    x = 319,688,695,731.62/528,035.90
  6. Step 6: Final answer
    x = 605,429.85

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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.