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Finding the Fourth Proportional to 909,575.40, 1,275,271.80 and 909,575.40

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Solution

The fourth proportional to 909,575.40, 1,275,271.80 and 909,575.40 is: 1,275,271.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,575.40 : 1,275,271.80 = 909,575.40 : x
  2. Step 2: Convert to fraction form
    909,575.40/1,275,271.80 = 909,575.40/x
  3. Step 3: Cross multiply
    909,575.40x = 1,275,271.80 × 909,575.40
  4. Step 4: Simplify right side
    909,575.40x = 1,159,955,857,593.72
  5. Step 5: Solve for x
    x = 1,159,955,857,593.72/909,575.40
  6. Step 6: Final answer
    x = 1,275,271.80

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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.