Home / 782,586,535.87-1,079,954,890.72-430,154,992.36

Finding the Fourth Proportional to 782,586,535.87, 1,079,954,890.72 and 430,154,992.36

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Solution

The fourth proportional to 782,586,535.87, 1,079,954,890.72 and 430,154,992.36 is: 593,605,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,586,535.87 : 1,079,954,890.72 = 430,154,992.36 : x
  2. Step 2: Convert to fraction form
    782,586,535.87/1,079,954,890.72 = 430,154,992.36/x
  3. Step 3: Cross multiply
    782,586,535.87x = 1,079,954,890.72 × 430,154,992.36
  4. Step 4: Simplify right side
    782,586,535.87x = 464,547,987,766,806,272
  5. Step 5: Solve for x
    x = 464,547,987,766,806,272/782,586,535.87
  6. Step 6: Final answer
    x = 593,605,903.60

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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.