Home / 1,860,421.40-2,790,632.10-1,325,043.80

Finding the Fourth Proportional to 1,860,421.40, 2,790,632.10 and 1,325,043.80

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Solution

The fourth proportional to 1,860,421.40, 2,790,632.10 and 1,325,043.80 is: 1,987,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860,421.40 : 2,790,632.10 = 1,325,043.80 : x
  2. Step 2: Convert to fraction form
    1,860,421.40/2,790,632.10 = 1,325,043.80/x
  3. Step 3: Cross multiply
    1,860,421.40x = 2,790,632.10 × 1,325,043.80
  4. Step 4: Simplify right side
    1,860,421.40x = 3,697,709,762,185.98
  5. Step 5: Solve for x
    x = 3,697,709,762,185.98/1,860,421.40
  6. Step 6: Final answer
    x = 1,987,565.70

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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.