Home / 788,420.40-1,182,371.40-289,719.60

Finding the Fourth Proportional to 788,420.40, 1,182,371.40 and 289,719.60

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Solution

The fourth proportional to 788,420.40, 1,182,371.40 and 289,719.60 is: 434,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,420.40 : 1,182,371.40 = 289,719.60 : x
  2. Step 2: Convert to fraction form
    788,420.40/1,182,371.40 = 289,719.60/x
  3. Step 3: Cross multiply
    788,420.40x = 1,182,371.40 × 289,719.60
  4. Step 4: Simplify right side
    788,420.40x = 342,556,169,059.44
  5. Step 5: Solve for x
    x = 342,556,169,059.44/788,420.40
  6. Step 6: Final answer
    x = 434,484.15

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1.5x scale

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.