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Finding the Fourth Proportional to 660,004.55, 910,806.65 and 358,198.55

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Solution

The fourth proportional to 660,004.55, 910,806.65 and 358,198.55 is: 494,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,004.55 : 910,806.65 = 358,198.55 : x
  2. Step 2: Convert to fraction form
    660,004.55/910,806.65 = 358,198.55/x
  3. Step 3: Cross multiply
    660,004.55x = 910,806.65 × 358,198.55
  4. Step 4: Simplify right side
    660,004.55x = 326,249,615,015.33
  5. Step 5: Solve for x
    x = 326,249,615,015.33/660,004.55
  6. Step 6: Final answer
    x = 494,314.19

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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.