Home / 985,644.81-1,478,478.96-386,887.95

Finding the Fourth Proportional to 985,644.81, 1,478,478.96 and 386,887.95

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Solution

The fourth proportional to 985,644.81, 1,478,478.96 and 386,887.95 is: 580,336.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,644.81 : 1,478,478.96 = 386,887.95 : x
  2. Step 2: Convert to fraction form
    985,644.81/1,478,478.96 = 386,887.95/x
  3. Step 3: Cross multiply
    985,644.81x = 1,478,478.96 × 386,887.95
  4. Step 4: Simplify right side
    985,644.81x = 572,005,693,952.53
  5. Step 5: Solve for x
    x = 572,005,693,952.53/985,644.81
  6. Step 6: Final answer
    x = 580,336.54

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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.