Home / 1,020,390.64-1,530,056.40-300,638.92

Finding the Fourth Proportional to 1,020,390.64, 1,530,056.40 and 300,638.92

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Solution

The fourth proportional to 1,020,390.64, 1,530,056.40 and 300,638.92 is: 450,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,390.64 : 1,530,056.40 = 300,638.92 : x
  2. Step 2: Convert to fraction form
    1,020,390.64/1,530,056.40 = 300,638.92/x
  3. Step 3: Cross multiply
    1,020,390.64x = 1,530,056.40 × 300,638.92
  4. Step 4: Simplify right side
    1,020,390.64x = 459,994,503,635.09
  5. Step 5: Solve for x
    x = 459,994,503,635.09/1,020,390.64
  6. Step 6: Final answer
    x = 450,802.36

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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.