Home / 492,130,622.46-678,820,256.55-315,639,066.36

Finding the Fourth Proportional to 492,130,622.46, 678,820,256.55 and 315,639,066.36

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Solution

The fourth proportional to 492,130,622.46, 678,820,256.55 and 315,639,066.36 is: 435,376,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,130,622.46 : 678,820,256.55 = 315,639,066.36 : x
  2. Step 2: Convert to fraction form
    492,130,622.46/678,820,256.55 = 315,639,066.36/x
  3. Step 3: Cross multiply
    492,130,622.46x = 678,820,256.55 × 315,639,066.36
  4. Step 4: Simplify right side
    492,130,622.46x = 214,262,192,003,697,664
  5. Step 5: Solve for x
    x = 214,262,192,003,697,664/492,130,622.46
  6. Step 6: Final answer
    x = 435,376,670.80

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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.