Home / 621,119,380.80-931,679,071.20-477,792,148.80

Finding the Fourth Proportional to 621,119,380.80, 931,679,071.20 and 477,792,148.80

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Solution

The fourth proportional to 621,119,380.80, 931,679,071.20 and 477,792,148.80 is: 716,688,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,119,380.80 : 931,679,071.20 = 477,792,148.80 : x
  2. Step 2: Convert to fraction form
    621,119,380.80/931,679,071.20 = 477,792,148.80/x
  3. Step 3: Cross multiply
    621,119,380.80x = 931,679,071.20 × 477,792,148.80
  4. Step 4: Simplify right side
    621,119,380.80x = 445,148,945,420,636,224
  5. Step 5: Solve for x
    x = 445,148,945,420,636,224/621,119,380.80
  6. Step 6: Final answer
    x = 716,688,223.20

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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.