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Finding the Fourth Proportional to 703,386.18, 970,671.60 and 381,105

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Solution

The fourth proportional to 703,386.18, 970,671.60 and 381,105 is: 525,924.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,386.18 : 970,671.60 = 381,105 : x
  2. Step 2: Convert to fraction form
    703,386.18/970,671.60 = 381,105/x
  3. Step 3: Cross multiply
    703,386.18x = 970,671.60 × 381,105
  4. Step 4: Simplify right side
    703,386.18x = 369,927,800,118
  5. Step 5: Solve for x
    x = 369,927,800,118/703,386.18
  6. Step 6: Final answer
    x = 525,924.18

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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.