Home / 905,371.40-1,249,406.34-497,477.54

Finding the Fourth Proportional to 905,371.40, 1,249,406.34 and 497,477.54

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Solution

The fourth proportional to 905,371.40, 1,249,406.34 and 497,477.54 is: 686,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,371.40 : 1,249,406.34 = 497,477.54 : x
  2. Step 2: Convert to fraction form
    905,371.40/1,249,406.34 = 497,477.54/x
  3. Step 3: Cross multiply
    905,371.40x = 1,249,406.34 × 497,477.54
  4. Step 4: Simplify right side
    905,371.40x = 621,551,592,483.60
  5. Step 5: Solve for x
    x = 621,551,592,483.60/905,371.40
  6. Step 6: Final answer
    x = 686,515.60

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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.