Home / 890,273,390.40-1,335,410,085.60-431,108,366.40

Finding the Fourth Proportional to 890,273,390.40, 1,335,410,085.60 and 431,108,366.40

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Solution

The fourth proportional to 890,273,390.40, 1,335,410,085.60 and 431,108,366.40 is: 646,662,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,273,390.40 : 1,335,410,085.60 = 431,108,366.40 : x
  2. Step 2: Convert to fraction form
    890,273,390.40/1,335,410,085.60 = 431,108,366.40/x
  3. Step 3: Cross multiply
    890,273,390.40x = 1,335,410,085.60 × 431,108,366.40
  4. Step 4: Simplify right side
    890,273,390.40x = 575,706,460,477,100,096
  5. Step 5: Solve for x
    x = 575,706,460,477,100,096/890,273,390.40
  6. Step 6: Final answer
    x = 646,662,549.60

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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.