Home / 689,220.16-951,124.38-383,289.88

Finding the Fourth Proportional to 689,220.16, 951,124.38 and 383,289.88

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Solution

The fourth proportional to 689,220.16, 951,124.38 and 383,289.88 is: 528,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,220.16 : 951,124.38 = 383,289.88 : x
  2. Step 2: Convert to fraction form
    689,220.16/951,124.38 = 383,289.88/x
  3. Step 3: Cross multiply
    689,220.16x = 951,124.38 × 383,289.88
  4. Step 4: Simplify right side
    689,220.16x = 364,556,349,475.27
  5. Step 5: Solve for x
    x = 364,556,349,475.27/689,220.16
  6. Step 6: Final answer
    x = 528,940.35

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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.