Home / 905,371.56-1,249,406.78-497,477.84

Finding the Fourth Proportional to 905,371.56, 1,249,406.78 and 497,477.84

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Solution

The fourth proportional to 905,371.56, 1,249,406.78 and 497,477.84 is: 686,516.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,371.56 : 1,249,406.78 = 497,477.84 : x
  2. Step 2: Convert to fraction form
    905,371.56/1,249,406.78 = 497,477.84/x
  3. Step 3: Cross multiply
    905,371.56x = 1,249,406.78 × 497,477.84
  4. Step 4: Simplify right side
    905,371.56x = 621,552,177,461.33
  5. Step 5: Solve for x
    x = 621,552,177,461.33/905,371.56
  6. Step 6: Final answer
    x = 686,516.13

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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.