Home / 684,987.20-945,244.32-383,122.88

Finding the Fourth Proportional to 684,987.20, 945,244.32 and 383,122.88

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Solution

The fourth proportional to 684,987.20, 945,244.32 and 383,122.88 is: 528,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,987.20 : 945,244.32 = 383,122.88 : x
  2. Step 2: Convert to fraction form
    684,987.20/945,244.32 = 383,122.88/x
  3. Step 3: Cross multiply
    684,987.20x = 945,244.32 × 383,122.88
  4. Step 4: Simplify right side
    684,987.20x = 362,144,726,182.04
  5. Step 5: Solve for x
    x = 362,144,726,182.04/684,987.20
  6. Step 6: Final answer
    x = 528,688.31

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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.