Home / 783,411.75-1,081,438.91-529,107.39

Finding the Fourth Proportional to 783,411.75, 1,081,438.91 and 529,107.39

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Solution

The fourth proportional to 783,411.75, 1,081,438.91 and 529,107.39 is: 730,391.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,411.75 : 1,081,438.91 = 529,107.39 : x
  2. Step 2: Convert to fraction form
    783,411.75/1,081,438.91 = 529,107.39/x
  3. Step 3: Cross multiply
    783,411.75x = 1,081,438.91 × 529,107.39
  4. Step 4: Simplify right side
    783,411.75x = 572,197,319,114.55
  5. Step 5: Solve for x
    x = 572,197,319,114.55/783,411.75
  6. Step 6: Final answer
    x = 730,391.55

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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.