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Finding the Fourth Proportional to 703,112.68, 970,287.78 and 380,814.76

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Solution

The fourth proportional to 703,112.68, 970,287.78 and 380,814.76 is: 525,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,112.68 : 970,287.78 = 380,814.76 : x
  2. Step 2: Convert to fraction form
    703,112.68/970,287.78 = 380,814.76/x
  3. Step 3: Cross multiply
    703,112.68x = 970,287.78 × 380,814.76
  4. Step 4: Simplify right side
    703,112.68x = 369,499,908,071.63
  5. Step 5: Solve for x
    x = 369,499,908,071.63/703,112.68
  6. Step 6: Final answer
    x = 525,520.19

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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.