Home / 679,226.77-937,313.17-388,828.53

Finding the Fourth Proportional to 679,226.77, 937,313.17 and 388,828.53

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Solution

The fourth proportional to 679,226.77, 937,313.17 and 388,828.53 is: 536,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,226.77 : 937,313.17 = 388,828.53 : x
  2. Step 2: Convert to fraction form
    679,226.77/937,313.17 = 388,828.53/x
  3. Step 3: Cross multiply
    679,226.77x = 937,313.17 × 388,828.53
  4. Step 4: Simplify right side
    679,226.77x = 364,454,098,432.48
  5. Step 5: Solve for x
    x = 364,454,098,432.48/679,226.77
  6. Step 6: Final answer
    x = 536,572.05

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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.