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Finding the Fourth Proportional to 702,788.10, 969,835.83 and 380,495.58

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Solution

The fourth proportional to 702,788.10, 969,835.83 and 380,495.58 is: 525,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,788.10 : 969,835.83 = 380,495.58 : x
  2. Step 2: Convert to fraction form
    702,788.10/969,835.83 = 380,495.58/x
  3. Step 3: Cross multiply
    702,788.10x = 969,835.83 × 380,495.58
  4. Step 4: Simplify right side
    702,788.10x = 369,018,246,640.63
  5. Step 5: Solve for x
    x = 369,018,246,640.63/702,788.10
  6. Step 6: Final answer
    x = 525,077.54

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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.