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Finding the Fourth Proportional to 978,053.69, 1,348,473.80 and 698,984.39

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Solution

The fourth proportional to 978,053.69, 1,348,473.80 and 698,984.39 is: 963,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,053.69 : 1,348,473.80 = 698,984.39 : x
  2. Step 2: Convert to fraction form
    978,053.69/1,348,473.80 = 698,984.39/x
  3. Step 3: Cross multiply
    978,053.69x = 1,348,473.80 × 698,984.39
  4. Step 4: Simplify right side
    978,053.69x = 942,562,126,286.69
  5. Step 5: Solve for x
    x = 942,562,126,286.69/978,053.69
  6. Step 6: Final answer
    x = 963,712.05

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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.