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Finding the Fourth Proportional to 661,240.89, 912,513.03 and 359,434.89

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Solution

The fourth proportional to 661,240.89, 912,513.03 and 359,434.89 is: 496,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,240.89 : 912,513.03 = 359,434.89 : x
  2. Step 2: Convert to fraction form
    661,240.89/912,513.03 = 359,434.89/x
  3. Step 3: Cross multiply
    661,240.89x = 912,513.03 × 359,434.89
  4. Step 4: Simplify right side
    661,240.89x = 327,989,020,561.62
  5. Step 5: Solve for x
    x = 327,989,020,561.62/661,240.89
  6. Step 6: Final answer
    x = 496,020.48

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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.