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Finding the Fourth Proportional to 405,871.60, 608,807.40 and 375,458.80

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Solution

The fourth proportional to 405,871.60, 608,807.40 and 375,458.80 is: 563,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,871.60 : 608,807.40 = 375,458.80 : x
  2. Step 2: Convert to fraction form
    405,871.60/608,807.40 = 375,458.80/x
  3. Step 3: Cross multiply
    405,871.60x = 608,807.40 × 375,458.80
  4. Step 4: Simplify right side
    405,871.60x = 228,582,095,835.12
  5. Step 5: Solve for x
    x = 228,582,095,835.12/405,871.60
  6. Step 6: Final answer
    x = 563,188.20

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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.