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Finding the Fourth Proportional to 702,780.84, 969,837.12 and 380,493.72

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Solution

The fourth proportional to 702,780.84, 969,837.12 and 380,493.72 is: 525,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,780.84 : 969,837.12 = 380,493.72 : x
  2. Step 2: Convert to fraction form
    702,780.84/969,837.12 = 380,493.72/x
  3. Step 3: Cross multiply
    702,780.84x = 969,837.12 × 380,493.72
  4. Step 4: Simplify right side
    702,780.84x = 369,016,933,582.89
  5. Step 5: Solve for x
    x = 369,016,933,582.89/702,780.84
  6. Step 6: Final answer
    x = 525,081.10

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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.