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Finding the Fourth Proportional to 636,701.42, 878,671.32 and 350,243.30

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Solution

The fourth proportional to 636,701.42, 878,671.32 and 350,243.30 is: 483,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,701.42 : 878,671.32 = 350,243.30 : x
  2. Step 2: Convert to fraction form
    636,701.42/878,671.32 = 350,243.30/x
  3. Step 3: Cross multiply
    636,701.42x = 878,671.32 × 350,243.30
  4. Step 4: Simplify right side
    636,701.42x = 307,748,742,732.16
  5. Step 5: Solve for x
    x = 307,748,742,732.16/636,701.42
  6. Step 6: Final answer
    x = 483,348.60

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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.