Home / 656,505.36-905,977.80-354,699.36

Finding the Fourth Proportional to 656,505.36, 905,977.80 and 354,699.36

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Solution

The fourth proportional to 656,505.36, 905,977.80 and 354,699.36 is: 489,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,505.36 : 905,977.80 = 354,699.36 : x
  2. Step 2: Convert to fraction form
    656,505.36/905,977.80 = 354,699.36/x
  3. Step 3: Cross multiply
    656,505.36x = 905,977.80 × 354,699.36
  4. Step 4: Simplify right side
    656,505.36x = 321,349,745,834.21
  5. Step 5: Solve for x
    x = 321,349,745,834.21/656,505.36
  6. Step 6: Final answer
    x = 489,485.33

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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.