Home / 450,929.66-621,983.52-289,988.33

Finding the Fourth Proportional to 450,929.66, 621,983.52 and 289,988.33

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Solution

The fourth proportional to 450,929.66, 621,983.52 and 289,988.33 is: 399,991.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,929.66 : 621,983.52 = 289,988.33 : x
  2. Step 2: Convert to fraction form
    450,929.66/621,983.52 = 289,988.33/x
  3. Step 3: Cross multiply
    450,929.66x = 621,983.52 × 289,988.33
  4. Step 4: Simplify right side
    450,929.66x = 180,367,959,142.40
  5. Step 5: Solve for x
    x = 180,367,959,142.40/450,929.66
  6. Step 6: Final answer
    x = 399,991.34

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1.5x scale

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.