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Finding the Fourth Proportional to 660,884.98, 912,018.09 and 374,404.38

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Solution

The fourth proportional to 660,884.98, 912,018.09 and 374,404.38 is: 516,676.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,884.98 : 912,018.09 = 374,404.38 : x
  2. Step 2: Convert to fraction form
    660,884.98/912,018.09 = 374,404.38/x
  3. Step 3: Cross multiply
    660,884.98x = 912,018.09 × 374,404.38
  4. Step 4: Simplify right side
    660,884.98x = 341,463,567,535.23
  5. Step 5: Solve for x
    x = 341,463,567,535.23/660,884.98
  6. Step 6: Final answer
    x = 516,676.24

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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.