Home / 1,239,009.20-1,858,076.40-440,316.80

Finding the Fourth Proportional to 1,239,009.20, 1,858,076.40 and 440,316.80

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Solution

The fourth proportional to 1,239,009.20, 1,858,076.40 and 440,316.80 is: 660,319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,009.20 : 1,858,076.40 = 440,316.80 : x
  2. Step 2: Convert to fraction form
    1,239,009.20/1,858,076.40 = 440,316.80/x
  3. Step 3: Cross multiply
    1,239,009.20x = 1,858,076.40 × 440,316.80
  4. Step 4: Simplify right side
    1,239,009.20x = 818,142,254,603.52
  5. Step 5: Solve for x
    x = 818,142,254,603.52/1,239,009.20
  6. Step 6: Final answer
    x = 660,319.76

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1.5x scale

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.