Home / 1,278,459.30-1,916,360.55-519,975.30

Finding the Fourth Proportional to 1,278,459.30, 1,916,360.55 and 519,975.30

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Solution

The fourth proportional to 1,278,459.30, 1,916,360.55 and 519,975.30 is: 779,422.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,459.30 : 1,916,360.55 = 519,975.30 : x
  2. Step 2: Convert to fraction form
    1,278,459.30/1,916,360.55 = 519,975.30/x
  3. Step 3: Cross multiply
    1,278,459.30x = 1,916,360.55 × 519,975.30
  4. Step 4: Simplify right side
    1,278,459.30x = 996,460,151,894.42
  5. Step 5: Solve for x
    x = 996,460,151,894.42/1,278,459.30
  6. Step 6: Final answer
    x = 779,422.66

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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.