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Finding the Fourth Proportional to 657,842.34, 907,822.44 and 356,036.34

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Solution

The fourth proportional to 657,842.34, 907,822.44 and 356,036.34 is: 491,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,842.34 : 907,822.44 = 356,036.34 : x
  2. Step 2: Convert to fraction form
    657,842.34/907,822.44 = 356,036.34/x
  3. Step 3: Cross multiply
    657,842.34x = 907,822.44 × 356,036.34
  4. Step 4: Simplify right side
    657,842.34x = 323,217,778,907.47
  5. Step 5: Solve for x
    x = 323,217,778,907.47/657,842.34
  6. Step 6: Final answer
    x = 491,330.16

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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.