Home / 1,398,090.84-1,929,346.84-786,243.40

Finding the Fourth Proportional to 1,398,090.84, 1,929,346.84 and 786,243.40

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Solution

The fourth proportional to 1,398,090.84, 1,929,346.84 and 786,243.40 is: 1,085,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,090.84 : 1,929,346.84 = 786,243.40 : x
  2. Step 2: Convert to fraction form
    1,398,090.84/1,929,346.84 = 786,243.40/x
  3. Step 3: Cross multiply
    1,398,090.84x = 1,929,346.84 × 786,243.40
  4. Step 4: Simplify right side
    1,398,090.84x = 1,516,936,219,260.86
  5. Step 5: Solve for x
    x = 1,516,936,219,260.86/1,398,090.84
  6. Step 6: Final answer
    x = 1,085,005.48

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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.