Home / 1,918,328.40-2,879,825.40-971,211.60

Finding the Fourth Proportional to 1,918,328.40, 2,879,825.40 and 971,211.60

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Solution

The fourth proportional to 1,918,328.40, 2,879,825.40 and 971,211.60 is: 1,457,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,328.40 : 2,879,825.40 = 971,211.60 : x
  2. Step 2: Convert to fraction form
    1,918,328.40/2,879,825.40 = 971,211.60/x
  3. Step 3: Cross multiply
    1,918,328.40x = 2,879,825.40 × 971,211.60
  4. Step 4: Simplify right side
    1,918,328.40x = 2,796,919,834,454.64
  5. Step 5: Solve for x
    x = 2,796,919,834,454.64/1,918,328.40
  6. Step 6: Final answer
    x = 1,457,998.45

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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.