Home / 740,939.76-1,022,490.45-401,407.20

Finding the Fourth Proportional to 740,939.76, 1,022,490.45 and 401,407.20

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Solution

The fourth proportional to 740,939.76, 1,022,490.45 and 401,407.20 is: 553,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,939.76 : 1,022,490.45 = 401,407.20 : x
  2. Step 2: Convert to fraction form
    740,939.76/1,022,490.45 = 401,407.20/x
  3. Step 3: Cross multiply
    740,939.76x = 1,022,490.45 × 401,407.20
  4. Step 4: Simplify right side
    740,939.76x = 410,435,028,561.24
  5. Step 5: Solve for x
    x = 410,435,028,561.24/740,939.76
  6. Step 6: Final answer
    x = 553,938.46

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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.