Home / 638,686,959.54-881,382,870.54-370,787,650.26

Finding the Fourth Proportional to 638,686,959.54, 881,382,870.54 and 370,787,650.26

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Solution

The fourth proportional to 638,686,959.54, 881,382,870.54 and 370,787,650.26 is: 511,683,977.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,686,959.54 : 881,382,870.54 = 370,787,650.26 : x
  2. Step 2: Convert to fraction form
    638,686,959.54/881,382,870.54 = 370,787,650.26/x
  3. Step 3: Cross multiply
    638,686,959.54x = 881,382,870.54 × 370,787,650.26
  4. Step 4: Simplify right side
    638,686,959.54x = 326,805,883,546,940,352
  5. Step 5: Solve for x
    x = 326,805,883,546,940,352/638,686,959.54
  6. Step 6: Final answer
    x = 511,683,977.05

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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.