Home / 656,384.10-905,808.71-354,578.10

Finding the Fourth Proportional to 656,384.10, 905,808.71 and 354,578.10

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Solution

The fourth proportional to 656,384.10, 905,808.71 and 354,578.10 is: 489,317.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,384.10 : 905,808.71 = 354,578.10 : x
  2. Step 2: Convert to fraction form
    656,384.10/905,808.71 = 354,578.10/x
  3. Step 3: Cross multiply
    656,384.10x = 905,808.71 × 354,578.10
  4. Step 4: Simplify right side
    656,384.10x = 321,179,929,582.36
  5. Step 5: Solve for x
    x = 321,179,929,582.36/656,384.10
  6. Step 6: Final answer
    x = 489,317.05

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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.