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Finding the Fourth Proportional to 1,673,640, 2,309,614.56 and 909,697.68

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Solution

The fourth proportional to 1,673,640, 2,309,614.56 and 909,697.68 is: 1,255,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673,640 : 2,309,614.56 = 909,697.68 : x
  2. Step 2: Convert to fraction form
    1,673,640/2,309,614.56 = 909,697.68/x
  3. Step 3: Cross multiply
    1,673,640x = 2,309,614.56 × 909,697.68
  4. Step 4: Simplify right side
    1,673,640x = 2,101,051,006,926.22
  5. Step 5: Solve for x
    x = 2,101,051,006,926.22/1,673,640
  6. Step 6: Final answer
    x = 1,255,378.10

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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.