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Finding the Fourth Proportional to 525,103.80, 787,655.70 and 437,623.80

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Solution

The fourth proportional to 525,103.80, 787,655.70 and 437,623.80 is: 656,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,103.80 : 787,655.70 = 437,623.80 : x
  2. Step 2: Convert to fraction form
    525,103.80/787,655.70 = 437,623.80/x
  3. Step 3: Cross multiply
    525,103.80x = 787,655.70 × 437,623.80
  4. Step 4: Simplify right side
    525,103.80x = 344,696,880,525.66
  5. Step 5: Solve for x
    x = 344,696,880,525.66/525,103.80
  6. Step 6: Final answer
    x = 656,435.70

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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.