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Finding the Fourth Proportional to 570,445.20, 855,390.78 and 286,013.52

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Solution

The fourth proportional to 570,445.20, 855,390.78 and 286,013.52 is: 428,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,445.20 : 855,390.78 = 286,013.52 : x
  2. Step 2: Convert to fraction form
    570,445.20/855,390.78 = 286,013.52/x
  3. Step 3: Cross multiply
    570,445.20x = 855,390.78 × 286,013.52
  4. Step 4: Simplify right side
    570,445.20x = 244,653,327,963.35
  5. Step 5: Solve for x
    x = 244,653,327,963.35/570,445.20
  6. Step 6: Final answer
    x = 428,881.39

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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.