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Finding the Fourth Proportional to 621,668.34, 857,903.58 and 367,035.90

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Solution

The fourth proportional to 621,668.34, 857,903.58 and 367,035.90 is: 506,510.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,668.34 : 857,903.58 = 367,035.90 : x
  2. Step 2: Convert to fraction form
    621,668.34/857,903.58 = 367,035.90/x
  3. Step 3: Cross multiply
    621,668.34x = 857,903.58 × 367,035.90
  4. Step 4: Simplify right side
    621,668.34x = 314,881,412,598.52
  5. Step 5: Solve for x
    x = 314,881,412,598.52/621,668.34
  6. Step 6: Final answer
    x = 506,510.29

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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.