Home / 638,010.96-879,841.08-419,829.36

Finding the Fourth Proportional to 638,010.96, 879,841.08 and 419,829.36

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Solution

The fourth proportional to 638,010.96, 879,841.08 and 419,829.36 is: 578,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,010.96 : 879,841.08 = 419,829.36 : x
  2. Step 2: Convert to fraction form
    638,010.96/879,841.08 = 419,829.36/x
  3. Step 3: Cross multiply
    638,010.96x = 879,841.08 × 419,829.36
  4. Step 4: Simplify right side
    638,010.96x = 369,383,117,518.11
  5. Step 5: Solve for x
    x = 369,383,117,518.11/638,010.96
  6. Step 6: Final answer
    x = 578,960.46

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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.