Home / 492,130,577.77-678,820,194.87-315,639,021.67

Finding the Fourth Proportional to 492,130,577.77, 678,820,194.87 and 315,639,021.67

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Solution

The fourth proportional to 492,130,577.77, 678,820,194.87 and 315,639,021.67 is: 435,376,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,130,577.77 : 678,820,194.87 = 315,639,021.67 : x
  2. Step 2: Convert to fraction form
    492,130,577.77/678,820,194.87 = 315,639,021.67/x
  3. Step 3: Cross multiply
    492,130,577.77x = 678,820,194.87 × 315,639,021.67
  4. Step 4: Simplify right side
    492,130,577.77x = 214,262,142,196,908,512
  5. Step 5: Solve for x
    x = 214,262,142,196,908,512/492,130,577.77
  6. Step 6: Final answer
    x = 435,376,609.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.