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Finding the Fourth Proportional to 565,606.75, 780,656.25 and 358,741.21

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Solution

The fourth proportional to 565,606.75, 780,656.25 and 358,741.21 is: 495,138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,606.75 : 780,656.25 = 358,741.21 : x
  2. Step 2: Convert to fraction form
    565,606.75/780,656.25 = 358,741.21/x
  3. Step 3: Cross multiply
    565,606.75x = 780,656.25 × 358,741.21
  4. Step 4: Simplify right side
    565,606.75x = 280,053,567,719.06
  5. Step 5: Solve for x
    x = 280,053,567,719.06/565,606.75
  6. Step 6: Final answer
    x = 495,138.31

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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.