Home / 657,345.12-907,136.34-355,539.12

Finding the Fourth Proportional to 657,345.12, 907,136.34 and 355,539.12

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Solution

The fourth proportional to 657,345.12, 907,136.34 and 355,539.12 is: 490,644.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,345.12 : 907,136.34 = 355,539.12 : x
  2. Step 2: Convert to fraction form
    657,345.12/907,136.34 = 355,539.12/x
  3. Step 3: Cross multiply
    657,345.12x = 907,136.34 × 355,539.12
  4. Step 4: Simplify right side
    657,345.12x = 322,522,456,043.62
  5. Step 5: Solve for x
    x = 322,522,456,043.62/657,345.12
  6. Step 6: Final answer
    x = 490,644.03

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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.