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Finding the Fourth Proportional to 472,356.30, 706,806.45 and 347,940.30

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Solution

The fourth proportional to 472,356.30, 706,806.45 and 347,940.30 is: 520,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,356.30 : 706,806.45 = 347,940.30 : x
  2. Step 2: Convert to fraction form
    472,356.30/706,806.45 = 347,940.30/x
  3. Step 3: Cross multiply
    472,356.30x = 706,806.45 × 347,940.30
  4. Step 4: Simplify right side
    472,356.30x = 245,926,448,254.94
  5. Step 5: Solve for x
    x = 245,926,448,254.94/472,356.30
  6. Step 6: Final answer
    x = 520,637.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.