Home / 806,975,999.40-1,210,463,999.10-398,829,311.40

Finding the Fourth Proportional to 806,975,999.40, 1,210,463,999.10 and 398,829,311.40

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Solution

The fourth proportional to 806,975,999.40, 1,210,463,999.10 and 398,829,311.40 is: 598,243,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,975,999.40 : 1,210,463,999.10 = 398,829,311.40 : x
  2. Step 2: Convert to fraction form
    806,975,999.40/1,210,463,999.10 = 398,829,311.40/x
  3. Step 3: Cross multiply
    806,975,999.40x = 1,210,463,999.10 × 398,829,311.40
  4. Step 4: Simplify right side
    806,975,999.40x = 482,768,523,235,543,168
  5. Step 5: Solve for x
    x = 482,768,523,235,543,168/806,975,999.40
  6. Step 6: Final answer
    x = 598,243,967.10

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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.