Home / 932,748.31-1,399,106.78-420,128.30

Finding the Fourth Proportional to 932,748.31, 1,399,106.78 and 420,128.30

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Solution

The fourth proportional to 932,748.31, 1,399,106.78 and 420,128.30 is: 630,185.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    932,748.31 : 1,399,106.78 = 420,128.30 : x
  2. Step 2: Convert to fraction form
    932,748.31/1,399,106.78 = 420,128.30/x
  3. Step 3: Cross multiply
    932,748.31x = 1,399,106.78 × 420,128.30
  4. Step 4: Simplify right side
    932,748.31x = 587,804,343,903.70
  5. Step 5: Solve for x
    x = 587,804,343,903.70/932,748.31
  6. Step 6: Final answer
    x = 630,185.38

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Double scale
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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.