Home / 728,883.36-1,005,852-402,199.20

Finding the Fourth Proportional to 728,883.36, 1,005,852 and 402,199.20

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Solution

The fourth proportional to 728,883.36, 1,005,852 and 402,199.20 is: 555,031.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,883.36 : 1,005,852 = 402,199.20 : x
  2. Step 2: Convert to fraction form
    728,883.36/1,005,852 = 402,199.20/x
  3. Step 3: Cross multiply
    728,883.36x = 1,005,852 × 402,199.20
  4. Step 4: Simplify right side
    728,883.36x = 404,552,869,718.40
  5. Step 5: Solve for x
    x = 404,552,869,718.40/728,883.36
  6. Step 6: Final answer
    x = 555,031.01

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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.