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Finding the Fourth Proportional to 1,275,668,388.80, 1,790,773,038.40 and 1,275,668,388.80

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Solution

The fourth proportional to 1,275,668,388.80, 1,790,773,038.40 and 1,275,668,388.80 is: 1,790,773,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,668,388.80 : 1,790,773,038.40 = 1,275,668,388.80 : x
  2. Step 2: Convert to fraction form
    1,275,668,388.80/1,790,773,038.40 = 1,275,668,388.80/x
  3. Step 3: Cross multiply
    1,275,668,388.80x = 1,790,773,038.40 × 1,275,668,388.80
  4. Step 4: Simplify right side
    1,275,668,388.80x = 2,284,432,556,602,208,512
  5. Step 5: Solve for x
    x = 2,284,432,556,602,208,512/1,275,668,388.80
  6. Step 6: Final answer
    x = 1,790,773,038.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.