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Finding the Fourth Proportional to 651,930, 899,666.64 and 380,186.34

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Solution

The fourth proportional to 651,930, 899,666.64 and 380,186.34 is: 524,659.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,930 : 899,666.64 = 380,186.34 : x
  2. Step 2: Convert to fraction form
    651,930/899,666.64 = 380,186.34/x
  3. Step 3: Cross multiply
    651,930x = 899,666.64 × 380,186.34
  4. Step 4: Simplify right side
    651,930x = 342,040,967,081.70
  5. Step 5: Solve for x
    x = 342,040,967,081.70/651,930
  6. Step 6: Final answer
    x = 524,659.04

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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.