Home / 811,050.16-1,119,189.36-448,478.80

Finding the Fourth Proportional to 811,050.16, 1,119,189.36 and 448,478.80

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Solution

The fourth proportional to 811,050.16, 1,119,189.36 and 448,478.80 is: 618,867.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,050.16 : 1,119,189.36 = 448,478.80 : x
  2. Step 2: Convert to fraction form
    811,050.16/1,119,189.36 = 448,478.80/x
  3. Step 3: Cross multiply
    811,050.16x = 1,119,189.36 × 448,478.80
  4. Step 4: Simplify right side
    811,050.16x = 501,932,701,145.57
  5. Step 5: Solve for x
    x = 501,932,701,145.57/811,050.16
  6. Step 6: Final answer
    x = 618,867.64

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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.