Home / 1,020,928.30-1,531,392.92-421,230.32

Finding the Fourth Proportional to 1,020,928.30, 1,531,392.92 and 421,230.32

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Solution

The fourth proportional to 1,020,928.30, 1,531,392.92 and 421,230.32 is: 631,845.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,928.30 : 1,531,392.92 = 421,230.32 : x
  2. Step 2: Convert to fraction form
    1,020,928.30/1,531,392.92 = 421,230.32/x
  3. Step 3: Cross multiply
    1,020,928.30x = 1,531,392.92 × 421,230.32
  4. Step 4: Simplify right side
    1,020,928.30x = 645,069,127,296.56
  5. Step 5: Solve for x
    x = 645,069,127,296.56/1,020,928.30
  6. Step 6: Final answer
    x = 631,845.67

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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.