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Finding the Fourth Proportional to 554,476.95, 765,182.77 and 306,126.90

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Solution

The fourth proportional to 554,476.95, 765,182.77 and 306,126.90 is: 422,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,476.95 : 765,182.77 = 306,126.90 : x
  2. Step 2: Convert to fraction form
    554,476.95/765,182.77 = 306,126.90/x
  3. Step 3: Cross multiply
    554,476.95x = 765,182.77 × 306,126.90
  4. Step 4: Simplify right side
    554,476.95x = 234,243,028,548.20
  5. Step 5: Solve for x
    x = 234,243,028,548.20/554,476.95
  6. Step 6: Final answer
    x = 422,457.65

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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.