Home / 1,391,503,666.70-1,920,160,913.55-819,195,879.26

Finding the Fourth Proportional to 1,391,503,666.70, 1,920,160,913.55 and 819,195,879.26

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Solution

The fourth proportional to 1,391,503,666.70, 1,920,160,913.55 and 819,195,879.26 is: 1,130,423,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,503,666.70 : 1,920,160,913.55 = 819,195,879.26 : x
  2. Step 2: Convert to fraction form
    1,391,503,666.70/1,920,160,913.55 = 819,195,879.26/x
  3. Step 3: Cross multiply
    1,391,503,666.70x = 1,920,160,913.55 × 819,195,879.26
  4. Step 4: Simplify right side
    1,391,503,666.70x = 1,572,987,907,896,276,992
  5. Step 5: Solve for x
    x = 1,572,987,907,896,276,992/1,391,503,666.70
  6. Step 6: Final answer
    x = 1,130,423,113.89

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1.5x scale

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.