Home / 698,653.31-1,048,239.46-485,308.81

Finding the Fourth Proportional to 698,653.31, 1,048,239.46 and 485,308.81

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Solution

The fourth proportional to 698,653.31, 1,048,239.46 and 485,308.81 is: 728,143.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,653.31 : 1,048,239.46 = 485,308.81 : x
  2. Step 2: Convert to fraction form
    698,653.31/1,048,239.46 = 485,308.81/x
  3. Step 3: Cross multiply
    698,653.31x = 1,048,239.46 × 485,308.81
  4. Step 4: Simplify right side
    698,653.31x = 508,719,844,927.64
  5. Step 5: Solve for x
    x = 508,719,844,927.64/698,653.31
  6. Step 6: Final answer
    x = 728,143.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.