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Finding the Fourth Proportional to 612,135.30, 917,306.55 and 548,955.30

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Solution

The fourth proportional to 612,135.30, 917,306.55 and 548,955.30 is: 822,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,135.30 : 917,306.55 = 548,955.30 : x
  2. Step 2: Convert to fraction form
    612,135.30/917,306.55 = 548,955.30/x
  3. Step 3: Cross multiply
    612,135.30x = 917,306.55 × 548,955.30
  4. Step 4: Simplify right side
    612,135.30x = 503,560,292,347.22
  5. Step 5: Solve for x
    x = 503,560,292,347.22/612,135.30
  6. Step 6: Final answer
    x = 822,629.07

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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.