Home / 1,319,200.65-1,978,800.98-688,032.45

Finding the Fourth Proportional to 1,319,200.65, 1,978,800.98 and 688,032.45

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Solution

The fourth proportional to 1,319,200.65, 1,978,800.98 and 688,032.45 is: 1,032,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,200.65 : 1,978,800.98 = 688,032.45 : x
  2. Step 2: Convert to fraction form
    1,319,200.65/1,978,800.98 = 688,032.45/x
  3. Step 3: Cross multiply
    1,319,200.65x = 1,978,800.98 × 688,032.45
  4. Step 4: Simplify right side
    1,319,200.65x = 1,361,479,282,891.64
  5. Step 5: Solve for x
    x = 1,361,479,282,891.64/1,319,200.65
  6. Step 6: Final answer
    x = 1,032,048.68

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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.