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Finding the Fourth Proportional to 657,447, 907,277.64 and 355,641

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Solution

The fourth proportional to 657,447, 907,277.64 and 355,641 is: 490,785.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,447 : 907,277.64 = 355,641 : x
  2. Step 2: Convert to fraction form
    657,447/907,277.64 = 355,641/x
  3. Step 3: Cross multiply
    657,447x = 907,277.64 × 355,641
  4. Step 4: Simplify right side
    657,447x = 322,665,127,167.24
  5. Step 5: Solve for x
    x = 322,665,127,167.24/657,447
  6. Step 6: Final answer
    x = 490,785.00

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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.