Home / 869,001.21-1,199,218.91-506,639.61

Finding the Fourth Proportional to 869,001.21, 1,199,218.91 and 506,639.61

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Solution

The fourth proportional to 869,001.21, 1,199,218.91 and 506,639.61 is: 699,161.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,001.21 : 1,199,218.91 = 506,639.61 : x
  2. Step 2: Convert to fraction form
    869,001.21/1,199,218.91 = 506,639.61/x
  3. Step 3: Cross multiply
    869,001.21x = 1,199,218.91 × 506,639.61
  4. Step 4: Simplify right side
    869,001.21x = 607,571,798,333.83
  5. Step 5: Solve for x
    x = 607,571,798,333.83/869,001.21
  6. Step 6: Final answer
    x = 699,161.05

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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.