Home / 805,532.19-1,111,357.77-499,498.45

Finding the Fourth Proportional to 805,532.19, 1,111,357.77 and 499,498.45

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Solution

The fourth proportional to 805,532.19, 1,111,357.77 and 499,498.45 is: 689,136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,532.19 : 1,111,357.77 = 499,498.45 : x
  2. Step 2: Convert to fraction form
    805,532.19/1,111,357.77 = 499,498.45/x
  3. Step 3: Cross multiply
    805,532.19x = 1,111,357.77 × 499,498.45
  4. Step 4: Simplify right side
    805,532.19x = 555,121,478,858.94
  5. Step 5: Solve for x
    x = 555,121,478,858.94/805,532.19
  6. Step 6: Final answer
    x = 689,136.31

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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.