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Finding the Fourth Proportional to 657,039.23, 906,715.46 and 355,233.23

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Solution

The fourth proportional to 657,039.23, 906,715.46 and 355,233.23 is: 490,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,039.23 : 906,715.46 = 355,233.23 : x
  2. Step 2: Convert to fraction form
    657,039.23/906,715.46 = 355,233.23/x
  3. Step 3: Cross multiply
    657,039.23x = 906,715.46 × 355,233.23
  4. Step 4: Simplify right side
    657,039.23x = 322,095,459,770.57
  5. Step 5: Solve for x
    x = 322,095,459,770.57/657,039.23
  6. Step 6: Final answer
    x = 490,222.57

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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.