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Finding the Fourth Proportional to 528,048.20, 792,072.30 and 469,987.40

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Solution

The fourth proportional to 528,048.20, 792,072.30 and 469,987.40 is: 704,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,048.20 : 792,072.30 = 469,987.40 : x
  2. Step 2: Convert to fraction form
    528,048.20/792,072.30 = 469,987.40/x
  3. Step 3: Cross multiply
    528,048.20x = 792,072.30 × 469,987.40
  4. Step 4: Simplify right side
    528,048.20x = 372,264,000,889.02
  5. Step 5: Solve for x
    x = 372,264,000,889.02/528,048.20
  6. Step 6: Final answer
    x = 704,981.10

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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.