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Finding the Fourth Proportional to 657,813.34, 907,784.58 and 356,007.34

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Solution

The fourth proportional to 657,813.34, 907,784.58 and 356,007.34 is: 491,291.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,813.34 : 907,784.58 = 356,007.34 : x
  2. Step 2: Convert to fraction form
    657,813.34/907,784.58 = 356,007.34/x
  3. Step 3: Cross multiply
    657,813.34x = 907,784.58 × 356,007.34
  4. Step 4: Simplify right side
    657,813.34x = 323,177,973,618.82
  5. Step 5: Solve for x
    x = 323,177,973,618.82/657,813.34
  6. Step 6: Final answer
    x = 491,291.30

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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.