Home / 783,785.79-1,081,667.18-439,730.70

Finding the Fourth Proportional to 783,785.79, 1,081,667.18 and 439,730.70

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Solution

The fourth proportional to 783,785.79, 1,081,667.18 and 439,730.70 is: 606,852.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,785.79 : 1,081,667.18 = 439,730.70 : x
  2. Step 2: Convert to fraction form
    783,785.79/1,081,667.18 = 439,730.70/x
  3. Step 3: Cross multiply
    783,785.79x = 1,081,667.18 × 439,730.70
  4. Step 4: Simplify right side
    783,785.79x = 475,642,266,228.43
  5. Step 5: Solve for x
    x = 475,642,266,228.43/783,785.79
  6. Step 6: Final answer
    x = 606,852.37

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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.