Home / 805,812.40-1,208,718.60-485,095.60

Finding the Fourth Proportional to 805,812.40, 1,208,718.60 and 485,095.60

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Solution

The fourth proportional to 805,812.40, 1,208,718.60 and 485,095.60 is: 727,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,812.40 : 1,208,718.60 = 485,095.60 : x
  2. Step 2: Convert to fraction form
    805,812.40/1,208,718.60 = 485,095.60/x
  3. Step 3: Cross multiply
    805,812.40x = 1,208,718.60 × 485,095.60
  4. Step 4: Simplify right side
    805,812.40x = 586,344,074,498.16
  5. Step 5: Solve for x
    x = 586,344,074,498.16/805,812.40
  6. Step 6: Final answer
    x = 727,643.40

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.