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Finding the Fourth Proportional to 657,289.75, 907,059.86 and 355,483.75

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Solution

The fourth proportional to 657,289.75, 907,059.86 and 355,483.75 is: 490,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,289.75 : 907,059.86 = 355,483.75 : x
  2. Step 2: Convert to fraction form
    657,289.75/907,059.86 = 355,483.75/x
  3. Step 3: Cross multiply
    657,289.75x = 907,059.86 × 355,483.75
  4. Step 4: Simplify right side
    657,289.75x = 322,445,040,507.28
  5. Step 5: Solve for x
    x = 322,445,040,507.28/657,289.75
  6. Step 6: Final answer
    x = 490,567.58

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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.