Home / 554,305.47-764,943.66-309,300.57

Finding the Fourth Proportional to 554,305.47, 764,943.66 and 309,300.57

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Solution

The fourth proportional to 554,305.47, 764,943.66 and 309,300.57 is: 426,835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,305.47 : 764,943.66 = 309,300.57 : x
  2. Step 2: Convert to fraction form
    554,305.47/764,943.66 = 309,300.57/x
  3. Step 3: Cross multiply
    554,305.47x = 764,943.66 × 309,300.57
  4. Step 4: Simplify right side
    554,305.47x = 236,597,510,055.89
  5. Step 5: Solve for x
    x = 236,597,510,055.89/554,305.47
  6. Step 6: Final answer
    x = 426,835.96

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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.