Home / 905,051.42-1,248,978.99-497,161.55

Finding the Fourth Proportional to 905,051.42, 1,248,978.99 and 497,161.55

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Solution

The fourth proportional to 905,051.42, 1,248,978.99 and 497,161.55 is: 686,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,051.42 : 1,248,978.99 = 497,161.55 : x
  2. Step 2: Convert to fraction form
    905,051.42/1,248,978.99 = 497,161.55/x
  3. Step 3: Cross multiply
    905,051.42x = 1,248,978.99 × 497,161.55
  4. Step 4: Simplify right side
    905,051.42x = 620,944,324,340.94
  5. Step 5: Solve for x
    x = 620,944,324,340.94/905,051.42
  6. Step 6: Final answer
    x = 686,087.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.