Home / 985,229.76-1,478,044.80-311,416.32

Finding the Fourth Proportional to 985,229.76, 1,478,044.80 and 311,416.32

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Solution

The fourth proportional to 985,229.76, 1,478,044.80 and 311,416.32 is: 467,187.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,229.76 : 1,478,044.80 = 311,416.32 : x
  2. Step 2: Convert to fraction form
    985,229.76/1,478,044.80 = 311,416.32/x
  3. Step 3: Cross multiply
    985,229.76x = 1,478,044.80 × 311,416.32
  4. Step 4: Simplify right side
    985,229.76x = 460,287,272,411.14
  5. Step 5: Solve for x
    x = 460,287,272,411.14/985,229.76
  6. Step 6: Final answer
    x = 467,187.75

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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.