Home / 685,966.80-1,029,059.55-286,401.90

Finding the Fourth Proportional to 685,966.80, 1,029,059.55 and 286,401.90

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Solution

The fourth proportional to 685,966.80, 1,029,059.55 and 286,401.90 is: 429,648.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,966.80 : 1,029,059.55 = 286,401.90 : x
  2. Step 2: Convert to fraction form
    685,966.80/1,029,059.55 = 286,401.90/x
  3. Step 3: Cross multiply
    685,966.80x = 1,029,059.55 × 286,401.90
  4. Step 4: Simplify right side
    685,966.80x = 294,724,610,333.15
  5. Step 5: Solve for x
    x = 294,724,610,333.15/685,966.80
  6. Step 6: Final answer
    x = 429,648.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.