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Finding the Fourth Proportional to 869,695.76, 1,200,236.91 and 502,188.40

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Solution

The fourth proportional to 869,695.76, 1,200,236.91 and 502,188.40 is: 693,052.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,695.76 : 1,200,236.91 = 502,188.40 : x
  2. Step 2: Convert to fraction form
    869,695.76/1,200,236.91 = 502,188.40/x
  3. Step 3: Cross multiply
    869,695.76x = 1,200,236.91 × 502,188.40
  4. Step 4: Simplify right side
    869,695.76x = 602,745,053,453.84
  5. Step 5: Solve for x
    x = 602,745,053,453.84/869,695.76
  6. Step 6: Final answer
    x = 693,052.77

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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.