Home / 1,210,771,221.80-1,670,864,270.79-653,854,219.67

Finding the Fourth Proportional to 1,210,771,221.80, 1,670,864,270.79 and 653,854,219.67

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Solution

The fourth proportional to 1,210,771,221.80, 1,670,864,270.79 and 653,854,219.67 is: 902,318,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,771,221.80 : 1,670,864,270.79 = 653,854,219.67 : x
  2. Step 2: Convert to fraction form
    1,210,771,221.80/1,670,864,270.79 = 653,854,219.67/x
  3. Step 3: Cross multiply
    1,210,771,221.80x = 1,670,864,270.79 × 653,854,219.67
  4. Step 4: Simplify right side
    1,210,771,221.80x = 1,092,501,653,951,878,912
  5. Step 5: Solve for x
    x = 1,092,501,653,951,878,912/1,210,771,221.80
  6. Step 6: Final answer
    x = 902,318,814.89

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Double scale
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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.