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Finding the Fourth Proportional to 523,756.80, 722,878.56 and 308,884.32

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Solution

The fourth proportional to 523,756.80, 722,878.56 and 308,884.32 is: 426,315.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,756.80 : 722,878.56 = 308,884.32 : x
  2. Step 2: Convert to fraction form
    523,756.80/722,878.56 = 308,884.32/x
  3. Step 3: Cross multiply
    523,756.80x = 722,878.56 × 308,884.32
  4. Step 4: Simplify right side
    523,756.80x = 223,285,852,448.18
  5. Step 5: Solve for x
    x = 223,285,852,448.18/523,756.80
  6. Step 6: Final answer
    x = 426,315.90

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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.