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Finding the Fourth Proportional to 398,767.40, 597,276.30 and 354,444.20

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Solution

The fourth proportional to 398,767.40, 597,276.30 and 354,444.20 is: 530,888.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,767.40 : 597,276.30 = 354,444.20 : x
  2. Step 2: Convert to fraction form
    398,767.40/597,276.30 = 354,444.20/x
  3. Step 3: Cross multiply
    398,767.40x = 597,276.30 × 354,444.20
  4. Step 4: Simplify right side
    398,767.40x = 211,701,120,332.46
  5. Step 5: Solve for x
    x = 211,701,120,332.46/398,767.40
  6. Step 6: Final answer
    x = 530,888.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.