Home / 1,038,568.40-1,556,686.20-439,427.60

Finding the Fourth Proportional to 1,038,568.40, 1,556,686.20 and 439,427.60

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Solution

The fourth proportional to 1,038,568.40, 1,556,686.20 and 439,427.60 is: 658,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,568.40 : 1,556,686.20 = 439,427.60 : x
  2. Step 2: Convert to fraction form
    1,038,568.40/1,556,686.20 = 439,427.60/x
  3. Step 3: Cross multiply
    1,038,568.40x = 1,556,686.20 × 439,427.60
  4. Step 4: Simplify right side
    1,038,568.40x = 684,050,880,819.12
  5. Step 5: Solve for x
    x = 684,050,880,819.12/1,038,568.40
  6. Step 6: Final answer
    x = 658,647.89

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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.