Home / 905,243.85-1,249,161.75-497,324.61

Finding the Fourth Proportional to 905,243.85, 1,249,161.75 and 497,324.61

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Solution

The fourth proportional to 905,243.85, 1,249,161.75 and 497,324.61 is: 686,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,243.85 : 1,249,161.75 = 497,324.61 : x
  2. Step 2: Convert to fraction form
    905,243.85/1,249,161.75 = 497,324.61/x
  3. Step 3: Cross multiply
    905,243.85x = 1,249,161.75 × 497,324.61
  4. Step 4: Simplify right side
    905,243.85x = 621,238,880,145.67
  5. Step 5: Solve for x
    x = 621,238,880,145.67/905,243.85
  6. Step 6: Final answer
    x = 686,266.89

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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.