Home / 1,128,710,771.28-1,693,284,190.32-429,148,514.64

Finding the Fourth Proportional to 1,128,710,771.28, 1,693,284,190.32 and 429,148,514.64

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Solution

The fourth proportional to 1,128,710,771.28, 1,693,284,190.32 and 429,148,514.64 is: 643,805,670.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,710,771.28 : 1,693,284,190.32 = 429,148,514.64 : x
  2. Step 2: Convert to fraction form
    1,128,710,771.28/1,693,284,190.32 = 429,148,514.64/x
  3. Step 3: Cross multiply
    1,128,710,771.28x = 1,693,284,190.32 × 429,148,514.64
  4. Step 4: Simplify right side
    1,128,710,771.28x = 726,670,395,139,223,040
  5. Step 5: Solve for x
    x = 726,670,395,139,223,040/1,128,710,771.28
  6. Step 6: Final answer
    x = 643,805,670.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.