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Finding the Fourth Proportional to 379,907.94, 569,578.77 and 127,038.90

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Solution

The fourth proportional to 379,907.94, 569,578.77 and 127,038.90 is: 190,463.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,907.94 : 569,578.77 = 127,038.90 : x
  2. Step 2: Convert to fraction form
    379,907.94/569,578.77 = 127,038.90/x
  3. Step 3: Cross multiply
    379,907.94x = 569,578.77 × 127,038.90
  4. Step 4: Simplify right side
    379,907.94x = 72,358,660,404.15
  5. Step 5: Solve for x
    x = 72,358,660,404.15/379,907.94
  6. Step 6: Final answer
    x = 190,463.67

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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.