Home / 519,779.48-778,267.40-339,418.12

Finding the Fourth Proportional to 519,779.48, 778,267.40 and 339,418.12

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Solution

The fourth proportional to 519,779.48, 778,267.40 and 339,418.12 is: 508,211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,779.48 : 778,267.40 = 339,418.12 : x
  2. Step 2: Convert to fraction form
    519,779.48/778,267.40 = 339,418.12/x
  3. Step 3: Cross multiply
    519,779.48x = 778,267.40 × 339,418.12
  4. Step 4: Simplify right side
    519,779.48x = 264,158,057,765.29
  5. Step 5: Solve for x
    x = 264,158,057,765.29/519,779.48
  6. Step 6: Final answer
    x = 508,211.79

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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.