Home / 985,699.68-1,477,913.82-386,721.42

Finding the Fourth Proportional to 985,699.68, 1,477,913.82 and 386,721.42

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Solution

The fourth proportional to 985,699.68, 1,477,913.82 and 386,721.42 is: 579,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,699.68 : 1,477,913.82 = 386,721.42 : x
  2. Step 2: Convert to fraction form
    985,699.68/1,477,913.82 = 386,721.42/x
  3. Step 3: Cross multiply
    985,699.68x = 1,477,913.82 × 386,721.42
  4. Step 4: Simplify right side
    985,699.68x = 571,540,931,108.02
  5. Step 5: Solve for x
    x = 571,540,931,108.02/985,699.68
  6. Step 6: Final answer
    x = 579,832.72

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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.