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Finding the Fourth Proportional to 636,856.69, 878,862.20 and 350,370.63

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Solution

The fourth proportional to 636,856.69, 878,862.20 and 350,370.63 is: 483,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,856.69 : 878,862.20 = 350,370.63 : x
  2. Step 2: Convert to fraction form
    636,856.69/878,862.20 = 350,370.63/x
  3. Step 3: Cross multiply
    636,856.69x = 878,862.20 × 350,370.63
  4. Step 4: Simplify right side
    636,856.69x = 307,927,502,697.19
  5. Step 5: Solve for x
    x = 307,927,502,697.19/636,856.69
  6. Step 6: Final answer
    x = 483,511.45

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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.