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Finding the Fourth Proportional to 659,401.10, 910,011.90 and 369,010.22

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Solution

The fourth proportional to 659,401.10, 910,011.90 and 369,010.22 is: 509,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,401.10 : 910,011.90 = 369,010.22 : x
  2. Step 2: Convert to fraction form
    659,401.10/910,011.90 = 369,010.22/x
  3. Step 3: Cross multiply
    659,401.10x = 910,011.90 × 369,010.22
  4. Step 4: Simplify right side
    659,401.10x = 335,803,686,179.66
  5. Step 5: Solve for x
    x = 335,803,686,179.66/659,401.10
  6. Step 6: Final answer
    x = 509,255.57

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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.