Home / 729,087.90-1,005,736.95-427,223.58

Finding the Fourth Proportional to 729,087.90, 1,005,736.95 and 427,223.58

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Solution

The fourth proportional to 729,087.90, 1,005,736.95 and 427,223.58 is: 589,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,087.90 : 1,005,736.95 = 427,223.58 : x
  2. Step 2: Convert to fraction form
    729,087.90/1,005,736.95 = 427,223.58/x
  3. Step 3: Cross multiply
    729,087.90x = 1,005,736.95 × 427,223.58
  4. Step 4: Simplify right side
    729,087.90x = 429,674,540,317.28
  5. Step 5: Solve for x
    x = 429,674,540,317.28/729,087.90
  6. Step 6: Final answer
    x = 589,331.60

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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.