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Finding the Fourth Proportional to 657,343.89, 907,134.63 and 355,537.89

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Solution

The fourth proportional to 657,343.89, 907,134.63 and 355,537.89 is: 490,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,343.89 : 907,134.63 = 355,537.89 : x
  2. Step 2: Convert to fraction form
    657,343.89/907,134.63 = 355,537.89/x
  3. Step 3: Cross multiply
    657,343.89x = 907,134.63 × 355,537.89
  4. Step 4: Simplify right side
    657,343.89x = 322,520,732,296.13
  5. Step 5: Solve for x
    x = 322,520,732,296.13/657,343.89
  6. Step 6: Final answer
    x = 490,642.32

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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.