Home / 554,280.17-764,895.96-312,558.35

Finding the Fourth Proportional to 554,280.17, 764,895.96 and 312,558.35

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Solution

The fourth proportional to 554,280.17, 764,895.96 and 312,558.35 is: 431,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,280.17 : 764,895.96 = 312,558.35 : x
  2. Step 2: Convert to fraction form
    554,280.17/764,895.96 = 312,558.35/x
  3. Step 3: Cross multiply
    554,280.17x = 764,895.96 × 312,558.35
  4. Step 4: Simplify right side
    554,280.17x = 239,074,615,354.79
  5. Step 5: Solve for x
    x = 239,074,615,354.79/554,280.17
  6. Step 6: Final answer
    x = 431,324.50

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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.