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Finding the Fourth Proportional to 605,075.60, 907,807.80 and 405,621.20

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Solution

The fourth proportional to 605,075.60, 907,807.80 and 405,621.20 is: 608,562.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,075.60 : 907,807.80 = 405,621.20 : x
  2. Step 2: Convert to fraction form
    605,075.60/907,807.80 = 405,621.20/x
  3. Step 3: Cross multiply
    605,075.60x = 907,807.80 × 405,621.20
  4. Step 4: Simplify right side
    605,075.60x = 368,226,089,205.36
  5. Step 5: Solve for x
    x = 368,226,089,205.36/605,075.60
  6. Step 6: Final answer
    x = 608,562.12

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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.