Home / 621,158,860.80-931,738,291.20-477,831,628.80

Finding the Fourth Proportional to 621,158,860.80, 931,738,291.20 and 477,831,628.80

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Solution

The fourth proportional to 621,158,860.80, 931,738,291.20 and 477,831,628.80 is: 716,747,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,158,860.80 : 931,738,291.20 = 477,831,628.80 : x
  2. Step 2: Convert to fraction form
    621,158,860.80/931,738,291.20 = 477,831,628.80/x
  3. Step 3: Cross multiply
    621,158,860.80x = 931,738,291.20 × 477,831,628.80
  4. Step 4: Simplify right side
    621,158,860.80x = 445,214,025,299,424,768
  5. Step 5: Solve for x
    x = 445,214,025,299,424,768/621,158,860.80
  6. Step 6: Final answer
    x = 716,747,443.20

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1.5x scale

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.