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Finding the Fourth Proportional to 565,576.68, 780,465.78 and 310,878.92

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Solution

The fourth proportional to 565,576.68, 780,465.78 and 310,878.92 is: 428,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,576.68 : 780,465.78 = 310,878.92 : x
  2. Step 2: Convert to fraction form
    565,576.68/780,465.78 = 310,878.92/x
  3. Step 3: Cross multiply
    565,576.68x = 780,465.78 × 310,878.92
  4. Step 4: Simplify right side
    565,576.68x = 242,630,358,783.36
  5. Step 5: Solve for x
    x = 242,630,358,783.36/565,576.68
  6. Step 6: Final answer
    x = 428,996.40

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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.