Home / 738,143.78-1,018,633.77-415,957.37

Finding the Fourth Proportional to 738,143.78, 1,018,633.77 and 415,957.37

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Solution

The fourth proportional to 738,143.78, 1,018,633.77 and 415,957.37 is: 574,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,143.78 : 1,018,633.77 = 415,957.37 : x
  2. Step 2: Convert to fraction form
    738,143.78/1,018,633.77 = 415,957.37/x
  3. Step 3: Cross multiply
    738,143.78x = 1,018,633.77 × 415,957.37
  4. Step 4: Simplify right side
    738,143.78x = 423,708,218,869.22
  5. Step 5: Solve for x
    x = 423,708,218,869.22/738,143.78
  6. Step 6: Final answer
    x = 574,018.55

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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.