Home / 698,471,396.40-1,047,707,094.60-207,202,378.80

Finding the Fourth Proportional to 698,471,396.40, 1,047,707,094.60 and 207,202,378.80

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Solution

The fourth proportional to 698,471,396.40, 1,047,707,094.60 and 207,202,378.80 is: 310,803,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,471,396.40 : 1,047,707,094.60 = 207,202,378.80 : x
  2. Step 2: Convert to fraction form
    698,471,396.40/1,047,707,094.60 = 207,202,378.80/x
  3. Step 3: Cross multiply
    698,471,396.40x = 1,047,707,094.60 × 207,202,378.80
  4. Step 4: Simplify right side
    698,471,396.40x = 217,087,402,286,756,640
  5. Step 5: Solve for x
    x = 217,087,402,286,756,640/698,471,396.40
  6. Step 6: Final answer
    x = 310,803,568.20

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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.