Home / 985,490.64-1,478,498.72-311,584.59

Finding the Fourth Proportional to 985,490.64, 1,478,498.72 and 311,584.59

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Solution

The fourth proportional to 985,490.64, 1,478,498.72 and 311,584.59 is: 467,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,490.64 : 1,478,498.72 = 311,584.59 : x
  2. Step 2: Convert to fraction form
    985,490.64/1,478,498.72 = 311,584.59/x
  3. Step 3: Cross multiply
    985,490.64x = 1,478,498.72 × 311,584.59
  4. Step 4: Simplify right side
    985,490.64x = 460,677,415,928.80
  5. Step 5: Solve for x
    x = 460,677,415,928.80/985,490.64
  6. Step 6: Final answer
    x = 467,459.96

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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.