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Finding the Fourth Proportional to 570,187.05, 786,860.21 and 308,542.35

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Solution

The fourth proportional to 570,187.05, 786,860.21 and 308,542.35 is: 425,789.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,187.05 : 786,860.21 = 308,542.35 : x
  2. Step 2: Convert to fraction form
    570,187.05/786,860.21 = 308,542.35/x
  3. Step 3: Cross multiply
    570,187.05x = 786,860.21 × 308,542.35
  4. Step 4: Simplify right side
    570,187.05x = 242,779,702,036.98
  5. Step 5: Solve for x
    x = 242,779,702,036.98/570,187.05
  6. Step 6: Final answer
    x = 425,789.58

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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.