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Finding the Fourth Proportional to 490,618.80, 677,045.88 and 272,818.80

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Solution

The fourth proportional to 490,618.80, 677,045.88 and 272,818.80 is: 376,485.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,618.80 : 677,045.88 = 272,818.80 : x
  2. Step 2: Convert to fraction form
    490,618.80/677,045.88 = 272,818.80/x
  3. Step 3: Cross multiply
    490,618.80x = 677,045.88 × 272,818.80
  4. Step 4: Simplify right side
    490,618.80x = 184,710,844,526.54
  5. Step 5: Solve for x
    x = 184,710,844,526.54/490,618.80
  6. Step 6: Final answer
    x = 376,485.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.