Home / 656,174,105.69-905,093,595.92-420,852,030.89

Finding the Fourth Proportional to 656,174,105.69, 905,093,595.92 and 420,852,030.89

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Solution

The fourth proportional to 656,174,105.69, 905,093,595.92 and 420,852,030.89 is: 580,502,148.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,174,105.69 : 905,093,595.92 = 420,852,030.89 : x
  2. Step 2: Convert to fraction form
    656,174,105.69/905,093,595.92 = 420,852,030.89/x
  3. Step 3: Cross multiply
    656,174,105.69x = 905,093,595.92 × 420,852,030.89
  4. Step 4: Simplify right side
    656,174,105.69x = 380,910,477,988,464,960
  5. Step 5: Solve for x
    x = 380,910,477,988,464,960/656,174,105.69
  6. Step 6: Final answer
    x = 580,502,148.26

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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.