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Finding the Fourth Proportional to 554,235, 764,844.32 and 403,458.36

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Solution

The fourth proportional to 554,235, 764,844.32 and 403,458.36 is: 556,772.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,235 : 764,844.32 = 403,458.36 : x
  2. Step 2: Convert to fraction form
    554,235/764,844.32 = 403,458.36/x
  3. Step 3: Cross multiply
    554,235x = 764,844.32 × 403,458.36
  4. Step 4: Simplify right side
    554,235x = 308,582,835,002.52
  5. Step 5: Solve for x
    x = 308,582,835,002.52/554,235
  6. Step 6: Final answer
    x = 556,772.55

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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.