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Finding the Fourth Proportional to 660,655.54, 911,705.52 and 358,849.54

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Solution

The fourth proportional to 660,655.54, 911,705.52 and 358,849.54 is: 495,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,655.54 : 911,705.52 = 358,849.54 : x
  2. Step 2: Convert to fraction form
    660,655.54/911,705.52 = 358,849.54/x
  3. Step 3: Cross multiply
    660,655.54x = 911,705.52 × 358,849.54
  4. Step 4: Simplify right side
    660,655.54x = 327,165,106,467.46
  5. Step 5: Solve for x
    x = 327,165,106,467.46/660,655.54
  6. Step 6: Final answer
    x = 495,212.84

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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.