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Finding the Fourth Proportional to 657,290.63, 907,061.07 and 355,484.63

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Solution

The fourth proportional to 657,290.63, 907,061.07 and 355,484.63 is: 490,568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,290.63 : 907,061.07 = 355,484.63 : x
  2. Step 2: Convert to fraction form
    657,290.63/907,061.07 = 355,484.63/x
  3. Step 3: Cross multiply
    657,290.63x = 907,061.07 × 355,484.63
  4. Step 4: Simplify right side
    657,290.63x = 322,446,268,856.35
  5. Step 5: Solve for x
    x = 322,446,268,856.35/657,290.63
  6. Step 6: Final answer
    x = 490,568.79

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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.