Home / 1,215,998,683,828.10-1,678,126,564,995.60-667,309,624,247.40

Finding the Fourth Proportional to 1,215,998,683,828.10, 1,678,126,564,995.60 and 667,309,624,247.40

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Solution

The fourth proportional to 1,215,998,683,828.10, 1,678,126,564,995.60 and 667,309,624,247.40 is: 920,913,831,914.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,998,683,828.10 : 1,678,126,564,995.60 = 667,309,624,247.40 : x
  2. Step 2: Convert to fraction form
    1,215,998,683,828.10/1,678,126,564,995.60 = 667,309,624,247.40/x
  3. Step 3: Cross multiply
    1,215,998,683,828.10x = 1,678,126,564,995.60 × 667,309,624,247.40
  4. Step 4: Simplify right side
    1,215,998,683,828.10x = 1,119,830,007,526,794,029,170,688
  5. Step 5: Solve for x
    x = 1,119,830,007,526,794,029,170,688/1,215,998,683,828.10
  6. Step 6: Final answer
    x = 920,913,831,914.23

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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.