Home / 786,675,396.40-1,180,726,931.40-398,768,081.20

Finding the Fourth Proportional to 786,675,396.40, 1,180,726,931.40 and 398,768,081.20

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Solution

The fourth proportional to 786,675,396.40, 1,180,726,931.40 and 398,768,081.20 is: 598,513,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,675,396.40 : 1,180,726,931.40 = 398,768,081.20 : x
  2. Step 2: Convert to fraction form
    786,675,396.40/1,180,726,931.40 = 398,768,081.20/x
  3. Step 3: Cross multiply
    786,675,396.40x = 1,180,726,931.40 × 398,768,081.20
  4. Step 4: Simplify right side
    786,675,396.40x = 470,836,212,855,542,080
  5. Step 5: Solve for x
    x = 470,836,212,855,542,080/786,675,396.40
  6. Step 6: Final answer
    x = 598,513,967.78

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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.