Home / 689,215.89-951,118.47-383,285.55

Finding the Fourth Proportional to 689,215.89, 951,118.47 and 383,285.55

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Solution

The fourth proportional to 689,215.89, 951,118.47 and 383,285.55 is: 528,934.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,215.89 : 951,118.47 = 383,285.55 : x
  2. Step 2: Convert to fraction form
    689,215.89/951,118.47 = 383,285.55/x
  3. Step 3: Cross multiply
    689,215.89x = 951,118.47 × 383,285.55
  4. Step 4: Simplify right side
    689,215.89x = 364,549,965,889.11
  5. Step 5: Solve for x
    x = 364,549,965,889.11/689,215.89
  6. Step 6: Final answer
    x = 528,934.36

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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.