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Finding the Fourth Proportional to 525,193.80, 787,790.70 and 314,723.40

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Solution

The fourth proportional to 525,193.80, 787,790.70 and 314,723.40 is: 472,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,193.80 : 787,790.70 = 314,723.40 : x
  2. Step 2: Convert to fraction form
    525,193.80/787,790.70 = 314,723.40/x
  3. Step 3: Cross multiply
    525,193.80x = 787,790.70 × 314,723.40
  4. Step 4: Simplify right side
    525,193.80x = 247,936,167,592.38
  5. Step 5: Solve for x
    x = 247,936,167,592.38/525,193.80
  6. Step 6: Final answer
    x = 472,085.10

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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.