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Finding the Fourth Proportional to 985,777.15, 1,478,029.83 and 386,798.82

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Solution

The fourth proportional to 985,777.15, 1,478,029.83 and 386,798.82 is: 579,948.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,777.15 : 1,478,029.83 = 386,798.82 : x
  2. Step 2: Convert to fraction form
    985,777.15/1,478,029.83 = 386,798.82/x
  3. Step 3: Cross multiply
    985,777.15x = 1,478,029.83 × 386,798.82
  4. Step 4: Simplify right side
    985,777.15x = 571,700,194,168.80
  5. Step 5: Solve for x
    x = 571,700,194,168.80/985,777.15
  6. Step 6: Final answer
    x = 579,948.72

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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.