Home / 807,420.07-1,114,186.22-485,143.75

Finding the Fourth Proportional to 807,420.07, 1,114,186.22 and 485,143.75

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Solution

The fourth proportional to 807,420.07, 1,114,186.22 and 485,143.75 is: 669,466.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,420.07 : 1,114,186.22 = 485,143.75 : x
  2. Step 2: Convert to fraction form
    807,420.07/1,114,186.22 = 485,143.75/x
  3. Step 3: Cross multiply
    807,420.07x = 1,114,186.22 × 485,143.75
  4. Step 4: Simplify right side
    807,420.07x = 540,540,478,543.41
  5. Step 5: Solve for x
    x = 540,540,478,543.41/807,420.07
  6. Step 6: Final answer
    x = 669,466.24

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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.