Home / 905,208.11-1,249,187.96-497,310.74

Finding the Fourth Proportional to 905,208.11, 1,249,187.96 and 497,310.74

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Solution

The fourth proportional to 905,208.11, 1,249,187.96 and 497,310.74 is: 686,289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,208.11 : 1,249,187.96 = 497,310.74 : x
  2. Step 2: Convert to fraction form
    905,208.11/1,249,187.96 = 497,310.74/x
  3. Step 3: Cross multiply
    905,208.11x = 1,249,187.96 × 497,310.74
  4. Step 4: Simplify right side
    905,208.11x = 621,234,588,786.69
  5. Step 5: Solve for x
    x = 621,234,588,786.69/905,208.11
  6. Step 6: Final answer
    x = 686,289.24

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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.