Home / 873,166.78-1,205,117.22-505,590.40

Finding the Fourth Proportional to 873,166.78, 1,205,117.22 and 505,590.40

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Solution

The fourth proportional to 873,166.78, 1,205,117.22 and 505,590.40 is: 697,799.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,166.78 : 1,205,117.22 = 505,590.40 : x
  2. Step 2: Convert to fraction form
    873,166.78/1,205,117.22 = 505,590.40/x
  3. Step 3: Cross multiply
    873,166.78x = 1,205,117.22 × 505,590.40
  4. Step 4: Simplify right side
    873,166.78x = 609,295,697,306.69
  5. Step 5: Solve for x
    x = 609,295,697,306.69/873,166.78
  6. Step 6: Final answer
    x = 697,799.91

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Double scale
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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.