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Finding the Fourth Proportional to 686,802.48, 947,818.02 and 380,858.34

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Solution

The fourth proportional to 686,802.48, 947,818.02 and 380,858.34 is: 525,601.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,802.48 : 947,818.02 = 380,858.34 : x
  2. Step 2: Convert to fraction form
    686,802.48/947,818.02 = 380,858.34/x
  3. Step 3: Cross multiply
    686,802.48x = 947,818.02 × 380,858.34
  4. Step 4: Simplify right side
    686,802.48x = 360,984,397,719.29
  5. Step 5: Solve for x
    x = 360,984,397,719.29/686,802.48
  6. Step 6: Final answer
    x = 525,601.48

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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.