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Finding the Fourth Proportional to 557,004.08, 768,643.49 and 315,336.79

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Solution

The fourth proportional to 557,004.08, 768,643.49 and 315,336.79 is: 435,152.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,004.08 : 768,643.49 = 315,336.79 : x
  2. Step 2: Convert to fraction form
    557,004.08/768,643.49 = 315,336.79/x
  3. Step 3: Cross multiply
    557,004.08x = 768,643.49 × 315,336.79
  4. Step 4: Simplify right side
    557,004.08x = 242,381,566,947.78
  5. Step 5: Solve for x
    x = 242,381,566,947.78/557,004.08
  6. Step 6: Final answer
    x = 435,152.23

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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.