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Finding the Fourth Proportional to 554,009.47, 764,598.36 and 309,032.81

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Solution

The fourth proportional to 554,009.47, 764,598.36 and 309,032.81 is: 426,501.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,009.47 : 764,598.36 = 309,032.81 : x
  2. Step 2: Convert to fraction form
    554,009.47/764,598.36 = 309,032.81/x
  3. Step 3: Cross multiply
    554,009.47x = 764,598.36 × 309,032.81
  4. Step 4: Simplify right side
    554,009.47x = 236,285,982,477.87
  5. Step 5: Solve for x
    x = 236,285,982,477.87/554,009.47
  6. Step 6: Final answer
    x = 426,501.71

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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.