Home / 685,492,854.56-1,027,521,698.89-286,879,819.58

Finding the Fourth Proportional to 685,492,854.56, 1,027,521,698.89 and 286,879,819.58

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Solution

The fourth proportional to 685,492,854.56, 1,027,521,698.89 and 286,879,819.58 is: 430,019,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,492,854.56 : 1,027,521,698.89 = 286,879,819.58 : x
  2. Step 2: Convert to fraction form
    685,492,854.56/1,027,521,698.89 = 286,879,819.58/x
  3. Step 3: Cross multiply
    685,492,854.56x = 1,027,521,698.89 × 286,879,819.58
  4. Step 4: Simplify right side
    685,492,854.56x = 294,775,239,592,098,240
  5. Step 5: Solve for x
    x = 294,775,239,592,098,240/685,492,854.56
  6. Step 6: Final answer
    x = 430,019,419.80

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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.