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Finding the Fourth Proportional to 612,085.30, 917,231.55 and 548,905.30

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Solution

The fourth proportional to 612,085.30, 917,231.55 and 548,905.30 is: 822,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,085.30 : 917,231.55 = 548,905.30 : x
  2. Step 2: Convert to fraction form
    612,085.30/917,231.55 = 548,905.30/x
  3. Step 3: Cross multiply
    612,085.30x = 917,231.55 × 548,905.30
  4. Step 4: Simplify right side
    612,085.30x = 503,473,259,122.22
  5. Step 5: Solve for x
    x = 503,473,259,122.22/612,085.30
  6. Step 6: Final answer
    x = 822,554.08

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1.5x scale

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.