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Finding the Fourth Proportional to 636,491.64, 878,335.74 and 350,009.22

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Solution

The fourth proportional to 636,491.64, 878,335.74 and 350,009.22 is: 483,000.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,491.64 : 878,335.74 = 350,009.22 : x
  2. Step 2: Convert to fraction form
    636,491.64/878,335.74 = 350,009.22/x
  3. Step 3: Cross multiply
    636,491.64x = 878,335.74 × 350,009.22
  4. Step 4: Simplify right side
    636,491.64x = 307,425,607,255.52
  5. Step 5: Solve for x
    x = 307,425,607,255.52/636,491.64
  6. Step 6: Final answer
    x = 483,000.23

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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.