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Finding the Fourth Proportional to 636,657.64, 878,588 and 350,199.52

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Solution

The fourth proportional to 636,657.64, 878,588 and 350,199.52 is: 483,275.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,657.64 : 878,588 = 350,199.52 : x
  2. Step 2: Convert to fraction form
    636,657.64/878,588 = 350,199.52/x
  3. Step 3: Cross multiply
    636,657.64x = 878,588 × 350,199.52
  4. Step 4: Simplify right side
    636,657.64x = 307,681,095,877.76
  5. Step 5: Solve for x
    x = 307,681,095,877.76/636,657.64
  6. Step 6: Final answer
    x = 483,275.59

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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.