Home / 1,315,409.60-1,973,114.40-428,945.60

Finding the Fourth Proportional to 1,315,409.60, 1,973,114.40 and 428,945.60

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Solution

The fourth proportional to 1,315,409.60, 1,973,114.40 and 428,945.60 is: 643,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,409.60 : 1,973,114.40 = 428,945.60 : x
  2. Step 2: Convert to fraction form
    1,315,409.60/1,973,114.40 = 428,945.60/x
  3. Step 3: Cross multiply
    1,315,409.60x = 1,973,114.40 × 428,945.60
  4. Step 4: Simplify right side
    1,315,409.60x = 846,358,740,176.64
  5. Step 5: Solve for x
    x = 846,358,740,176.64/1,315,409.60
  6. Step 6: Final answer
    x = 643,418.40

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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.