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Finding the Fourth Proportional to 702,790.60, 969,839.28 and 380,498.08

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Solution

The fourth proportional to 702,790.60, 969,839.28 and 380,498.08 is: 525,080.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,790.60 : 969,839.28 = 380,498.08 : x
  2. Step 2: Convert to fraction form
    702,790.60/969,839.28 = 380,498.08/x
  3. Step 3: Cross multiply
    702,790.60x = 969,839.28 × 380,498.08
  4. Step 4: Simplify right side
    702,790.60x = 369,021,983,948.58
  5. Step 5: Solve for x
    x = 369,021,983,948.58/702,790.60
  6. Step 6: Final answer
    x = 525,080.99

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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.