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Finding the Fourth Proportional to 404,886.78, 607,698.63 and 215,506.08

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Solution

The fourth proportional to 404,886.78, 607,698.63 and 215,506.08 is: 323,455.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,886.78 : 607,698.63 = 215,506.08 : x
  2. Step 2: Convert to fraction form
    404,886.78/607,698.63 = 215,506.08/x
  3. Step 3: Cross multiply
    404,886.78x = 607,698.63 × 215,506.08
  4. Step 4: Simplify right side
    404,886.78x = 130,962,749,572.67
  5. Step 5: Solve for x
    x = 130,962,749,572.67/404,886.78
  6. Step 6: Final answer
    x = 323,455.24

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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.