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Finding the Fourth Proportional to 570,803.70, 788,238.58 and 427,314.62

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Solution

The fourth proportional to 570,803.70, 788,238.58 and 427,314.62 is: 590,090.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,803.70 : 788,238.58 = 427,314.62 : x
  2. Step 2: Convert to fraction form
    570,803.70/788,238.58 = 427,314.62/x
  3. Step 3: Cross multiply
    570,803.70x = 788,238.58 × 427,314.62
  4. Step 4: Simplify right side
    570,803.70x = 336,825,869,282.04
  5. Step 5: Solve for x
    x = 336,825,869,282.04/570,803.70
  6. Step 6: Final answer
    x = 590,090.55

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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.