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Finding the Fourth Proportional to 570,855.72, 855,878.24 and 286,341.60

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Solution

The fourth proportional to 570,855.72, 855,878.24 and 286,341.60 is: 429,309.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,855.72 : 855,878.24 = 286,341.60 : x
  2. Step 2: Convert to fraction form
    570,855.72/855,878.24 = 286,341.60/x
  3. Step 3: Cross multiply
    570,855.72x = 855,878.24 × 286,341.60
  4. Step 4: Simplify right side
    570,855.72x = 245,073,544,646.78
  5. Step 5: Solve for x
    x = 245,073,544,646.78/570,855.72
  6. Step 6: Final answer
    x = 429,309.08

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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.