Home / 1,128,710,771.78-1,693,284,191.08-429,148,515.14

Finding the Fourth Proportional to 1,128,710,771.78, 1,693,284,191.08 and 429,148,515.14

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Solution

The fourth proportional to 1,128,710,771.78, 1,693,284,191.08 and 429,148,515.14 is: 643,805,671.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,710,771.78 : 1,693,284,191.08 = 429,148,515.14 : x
  2. Step 2: Convert to fraction form
    1,128,710,771.78/1,693,284,191.08 = 429,148,515.14/x
  3. Step 3: Cross multiply
    1,128,710,771.78x = 1,693,284,191.08 × 429,148,515.14
  4. Step 4: Simplify right side
    1,128,710,771.78x = 726,670,396,312,017,920
  5. Step 5: Solve for x
    x = 726,670,396,312,017,920/1,128,710,771.78
  6. Step 6: Final answer
    x = 643,805,671.46

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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.