Home / 698,165,792.40-1,047,248,688.60-309,576,133.20

Finding the Fourth Proportional to 698,165,792.40, 1,047,248,688.60 and 309,576,133.20

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Solution

The fourth proportional to 698,165,792.40, 1,047,248,688.60 and 309,576,133.20 is: 464,364,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,165,792.40 : 1,047,248,688.60 = 309,576,133.20 : x
  2. Step 2: Convert to fraction form
    698,165,792.40/1,047,248,688.60 = 309,576,133.20/x
  3. Step 3: Cross multiply
    698,165,792.40x = 1,047,248,688.60 × 309,576,133.20
  4. Step 4: Simplify right side
    698,165,792.40x = 324,203,199,515,558,912
  5. Step 5: Solve for x
    x = 324,203,199,515,558,912/698,165,792.40
  6. Step 6: Final answer
    x = 464,364,199.80

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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.