Home / 790,399.49-1,090,955.66-515,442.69

Finding the Fourth Proportional to 790,399.49, 1,090,955.66 and 515,442.69

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Solution

The fourth proportional to 790,399.49, 1,090,955.66 and 515,442.69 is: 711,444.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,399.49 : 1,090,955.66 = 515,442.69 : x
  2. Step 2: Convert to fraction form
    790,399.49/1,090,955.66 = 515,442.69/x
  3. Step 3: Cross multiply
    790,399.49x = 1,090,955.66 × 515,442.69
  4. Step 4: Simplify right side
    790,399.49x = 562,325,117,483.91
  5. Step 5: Solve for x
    x = 562,325,117,483.91/790,399.49
  6. Step 6: Final answer
    x = 711,444.19

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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.