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Finding the Fourth Proportional to 909,438.68, 1,363,782.68 and 310,448.16

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Solution

The fourth proportional to 909,438.68, 1,363,782.68 and 310,448.16 is: 465,544.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,438.68 : 1,363,782.68 = 310,448.16 : x
  2. Step 2: Convert to fraction form
    909,438.68/1,363,782.68 = 310,448.16/x
  3. Step 3: Cross multiply
    909,438.68x = 1,363,782.68 × 310,448.16
  4. Step 4: Simplify right side
    909,438.68x = 423,383,823,645.87
  5. Step 5: Solve for x
    x = 423,383,823,645.87/909,438.68
  6. Step 6: Final answer
    x = 465,544.11

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1.5x scale

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.