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Finding the Fourth Proportional to 618,037,805.70, 927,056,708.55 and 570,686,412.60

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Solution

The fourth proportional to 618,037,805.70, 927,056,708.55 and 570,686,412.60 is: 856,029,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,037,805.70 : 927,056,708.55 = 570,686,412.60 : x
  2. Step 2: Convert to fraction form
    618,037,805.70/927,056,708.55 = 570,686,412.60/x
  3. Step 3: Cross multiply
    618,037,805.70x = 927,056,708.55 × 570,686,412.60
  4. Step 4: Simplify right side
    618,037,805.70x = 529,058,667,279,163,264
  5. Step 5: Solve for x
    x = 529,058,667,279,163,264/618,037,805.70
  6. Step 6: Final answer
    x = 856,029,618.90

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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.