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Finding the Fourth Proportional to 702,782.22, 969,840 and 380,492.58

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Solution

The fourth proportional to 702,782.22, 969,840 and 380,492.58 is: 525,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,782.22 : 969,840 = 380,492.58 : x
  2. Step 2: Convert to fraction form
    702,782.22/969,840 = 380,492.58/x
  3. Step 3: Cross multiply
    702,782.22x = 969,840 × 380,492.58
  4. Step 4: Simplify right side
    702,782.22x = 369,016,923,787.20
  5. Step 5: Solve for x
    x = 369,016,923,787.20/702,782.22
  6. Step 6: Final answer
    x = 525,080.05

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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.