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Finding the Fourth Proportional to 528,068.20, 792,005.10 and 328,030.60

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Solution

The fourth proportional to 528,068.20, 792,005.10 and 328,030.60 is: 491,985.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,068.20 : 792,005.10 = 328,030.60 : x
  2. Step 2: Convert to fraction form
    528,068.20/792,005.10 = 328,030.60/x
  3. Step 3: Cross multiply
    528,068.20x = 792,005.10 × 328,030.60
  4. Step 4: Simplify right side
    528,068.20x = 259,801,908,156.06
  5. Step 5: Solve for x
    x = 259,801,908,156.06/528,068.20
  6. Step 6: Final answer
    x = 491,985.52

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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.