Home / 898,429.78-1,239,941.81-511,339.31

Finding the Fourth Proportional to 898,429.78, 1,239,941.81 and 511,339.31

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Solution

The fourth proportional to 898,429.78, 1,239,941.81 and 511,339.31 is: 705,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,429.78 : 1,239,941.81 = 511,339.31 : x
  2. Step 2: Convert to fraction form
    898,429.78/1,239,941.81 = 511,339.31/x
  3. Step 3: Cross multiply
    898,429.78x = 1,239,941.81 × 511,339.31
  4. Step 4: Simplify right side
    898,429.78x = 634,030,993,943.75
  5. Step 5: Solve for x
    x = 634,030,993,943.75/898,429.78
  6. Step 6: Final answer
    x = 705,710.13

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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.