Home / 643,921.80-965,882.70-616,619.40

Finding the Fourth Proportional to 643,921.80, 965,882.70 and 616,619.40

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Solution

The fourth proportional to 643,921.80, 965,882.70 and 616,619.40 is: 924,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,921.80 : 965,882.70 = 616,619.40 : x
  2. Step 2: Convert to fraction form
    643,921.80/965,882.70 = 616,619.40/x
  3. Step 3: Cross multiply
    643,921.80x = 965,882.70 × 616,619.40
  4. Step 4: Simplify right side
    643,921.80x = 595,582,010,944.38
  5. Step 5: Solve for x
    x = 595,582,010,944.38/643,921.80
  6. Step 6: Final answer
    x = 924,929.10

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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.