Home / 805,920.40-1,208,880.60-485,203.60

Finding the Fourth Proportional to 805,920.40, 1,208,880.60 and 485,203.60

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Solution

The fourth proportional to 805,920.40, 1,208,880.60 and 485,203.60 is: 727,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,920.40 : 1,208,880.60 = 485,203.60 : x
  2. Step 2: Convert to fraction form
    805,920.40/1,208,880.60 = 485,203.60/x
  3. Step 3: Cross multiply
    805,920.40x = 1,208,880.60 × 485,203.60
  4. Step 4: Simplify right side
    805,920.40x = 586,553,219,090.16
  5. Step 5: Solve for x
    x = 586,553,219,090.16/805,920.40
  6. Step 6: Final answer
    x = 727,805.40

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1.5x scale

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.