Home / 554,155.53-764,719.36-312,436.01

Finding the Fourth Proportional to 554,155.53, 764,719.36 and 312,436.01

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Solution

The fourth proportional to 554,155.53, 764,719.36 and 312,436.01 is: 431,153.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,155.53 : 764,719.36 = 312,436.01 : x
  2. Step 2: Convert to fraction form
    554,155.53/764,719.36 = 312,436.01/x
  3. Step 3: Cross multiply
    554,155.53x = 764,719.36 × 312,436.01
  4. Step 4: Simplify right side
    554,155.53x = 238,925,861,003.47
  5. Step 5: Solve for x
    x = 238,925,861,003.47/554,155.53
  6. Step 6: Final answer
    x = 431,153.08

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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.