Home / 1,335,905.60-2,003,858.40-389,307.20

Finding the Fourth Proportional to 1,335,905.60, 2,003,858.40 and 389,307.20

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Solution

The fourth proportional to 1,335,905.60, 2,003,858.40 and 389,307.20 is: 583,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,905.60 : 2,003,858.40 = 389,307.20 : x
  2. Step 2: Convert to fraction form
    1,335,905.60/2,003,858.40 = 389,307.20/x
  3. Step 3: Cross multiply
    1,335,905.60x = 2,003,858.40 × 389,307.20
  4. Step 4: Simplify right side
    1,335,905.60x = 780,116,502,900.48
  5. Step 5: Solve for x
    x = 780,116,502,900.48/1,335,905.60
  6. Step 6: Final answer
    x = 583,960.80

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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.