Home / 554,156.28-764,720.37-312,436.76

Finding the Fourth Proportional to 554,156.28, 764,720.37 and 312,436.76

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Solution

The fourth proportional to 554,156.28, 764,720.37 and 312,436.76 is: 431,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,156.28 : 764,720.37 = 312,436.76 : x
  2. Step 2: Convert to fraction form
    554,156.28/764,720.37 = 312,436.76/x
  3. Step 3: Cross multiply
    554,156.28x = 764,720.37 × 312,436.76
  4. Step 4: Simplify right side
    554,156.28x = 238,926,750,885.20
  5. Step 5: Solve for x
    x = 238,926,750,885.20/554,156.28
  6. Step 6: Final answer
    x = 431,154.10

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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.