Home / 1,038,630.40-1,556,779.20-439,489.60

Finding the Fourth Proportional to 1,038,630.40, 1,556,779.20 and 439,489.60

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Solution

The fourth proportional to 1,038,630.40, 1,556,779.20 and 439,489.60 is: 658,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,630.40 : 1,556,779.20 = 439,489.60 : x
  2. Step 2: Convert to fraction form
    1,038,630.40/1,556,779.20 = 439,489.60/x
  3. Step 3: Cross multiply
    1,038,630.40x = 1,556,779.20 × 439,489.60
  4. Step 4: Simplify right side
    1,038,630.40x = 684,188,267,896.32
  5. Step 5: Solve for x
    x = 684,188,267,896.32/1,038,630.40
  6. Step 6: Final answer
    x = 658,740.85

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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.