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Finding the Fourth Proportional to 554,085, 764,637.48 and 315,621

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Solution

The fourth proportional to 554,085, 764,637.48 and 315,621 is: 435,557.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,085 : 764,637.48 = 315,621 : x
  2. Step 2: Convert to fraction form
    554,085/764,637.48 = 315,621/x
  3. Step 3: Cross multiply
    554,085x = 764,637.48 × 315,621
  4. Step 4: Simplify right side
    554,085x = 241,335,646,075.08
  5. Step 5: Solve for x
    x = 241,335,646,075.08/554,085
  6. Step 6: Final answer
    x = 435,557.08

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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.