Home / 688,962.28-950,768.34-398,614.60

Finding the Fourth Proportional to 688,962.28, 950,768.34 and 398,614.60

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Solution

The fourth proportional to 688,962.28, 950,768.34 and 398,614.60 is: 550,088.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,962.28 : 950,768.34 = 398,614.60 : x
  2. Step 2: Convert to fraction form
    688,962.28/950,768.34 = 398,614.60/x
  3. Step 3: Cross multiply
    688,962.28x = 950,768.34 × 398,614.60
  4. Step 4: Simplify right side
    688,962.28x = 378,990,141,541.76
  5. Step 5: Solve for x
    x = 378,990,141,541.76/688,962.28
  6. Step 6: Final answer
    x = 550,088.38

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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.