Home / 738,365.63-1,018,945.47-398,833.88

Finding the Fourth Proportional to 738,365.63, 1,018,945.47 and 398,833.88

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Solution

The fourth proportional to 738,365.63, 1,018,945.47 and 398,833.88 is: 550,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,365.63 : 1,018,945.47 = 398,833.88 : x
  2. Step 2: Convert to fraction form
    738,365.63/1,018,945.47 = 398,833.88/x
  3. Step 3: Cross multiply
    738,365.63x = 1,018,945.47 × 398,833.88
  4. Step 4: Simplify right side
    738,365.63x = 406,389,971,709.42
  5. Step 5: Solve for x
    x = 406,389,971,709.42/738,365.63
  6. Step 6: Final answer
    x = 550,391.24

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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.