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Finding the Fourth Proportional to 521,702.60, 783,072.30 and 255,763.40

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Solution

The fourth proportional to 521,702.60, 783,072.30 and 255,763.40 is: 383,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,702.60 : 783,072.30 = 255,763.40 : x
  2. Step 2: Convert to fraction form
    521,702.60/783,072.30 = 255,763.40/x
  3. Step 3: Cross multiply
    521,702.60x = 783,072.30 × 255,763.40
  4. Step 4: Simplify right side
    521,702.60x = 200,281,233,893.82
  5. Step 5: Solve for x
    x = 200,281,233,893.82/521,702.60
  6. Step 6: Final answer
    x = 383,899.24

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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.