Home / 728,801.30-1,005,739.12-402,117.32

Finding the Fourth Proportional to 728,801.30, 1,005,739.12 and 402,117.32

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Solution

The fourth proportional to 728,801.30, 1,005,739.12 and 402,117.32 is: 554,918.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,801.30 : 1,005,739.12 = 402,117.32 : x
  2. Step 2: Convert to fraction form
    728,801.30/1,005,739.12 = 402,117.32/x
  3. Step 3: Cross multiply
    728,801.30x = 1,005,739.12 × 402,117.32
  4. Step 4: Simplify right side
    728,801.30x = 404,425,118,799.03
  5. Step 5: Solve for x
    x = 404,425,118,799.03/728,801.30
  6. Step 6: Final answer
    x = 554,918.22

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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.