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Finding the Fourth Proportional to 657,699.60, 907,627.84 and 355,893.60

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Solution

The fourth proportional to 657,699.60, 907,627.84 and 355,893.60 is: 491,134.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,699.60 : 907,627.84 = 355,893.60 : x
  2. Step 2: Convert to fraction form
    657,699.60/907,627.84 = 355,893.60/x
  3. Step 3: Cross multiply
    657,699.60x = 907,627.84 × 355,893.60
  4. Step 4: Simplify right side
    657,699.60x = 323,018,939,437.82
  5. Step 5: Solve for x
    x = 323,018,939,437.82/657,699.60
  6. Step 6: Final answer
    x = 491,134.46

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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.