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Finding the Fourth Proportional to 636,671.20, 878,587.74 and 350,191.22

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Solution

The fourth proportional to 636,671.20, 878,587.74 and 350,191.22 is: 483,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,671.20 : 878,587.74 = 350,191.22 : x
  2. Step 2: Convert to fraction form
    636,671.20/878,587.74 = 350,191.22/x
  3. Step 3: Cross multiply
    636,671.20x = 878,587.74 × 350,191.22
  4. Step 4: Simplify right side
    636,671.20x = 307,673,712,547.64
  5. Step 5: Solve for x
    x = 307,673,712,547.64/636,671.20
  6. Step 6: Final answer
    x = 483,253.70

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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.