Home / 728,968.56-1,005,433.32-535,315.20

Finding the Fourth Proportional to 728,968.56, 1,005,433.32 and 535,315.20

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Solution

The fourth proportional to 728,968.56, 1,005,433.32 and 535,315.20 is: 738,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,968.56 : 1,005,433.32 = 535,315.20 : x
  2. Step 2: Convert to fraction form
    728,968.56/1,005,433.32 = 535,315.20/x
  3. Step 3: Cross multiply
    728,968.56x = 1,005,433.32 × 535,315.20
  4. Step 4: Simplify right side
    728,968.56x = 538,223,738,782.46
  5. Step 5: Solve for x
    x = 538,223,738,782.46/728,968.56
  6. Step 6: Final answer
    x = 738,336.01

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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.