Home / 711,576.12-981,973.26-389,285.40

Finding the Fourth Proportional to 711,576.12, 981,973.26 and 389,285.40

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Solution

The fourth proportional to 711,576.12, 981,973.26 and 389,285.40 is: 537,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,576.12 : 981,973.26 = 389,285.40 : x
  2. Step 2: Convert to fraction form
    711,576.12/981,973.26 = 389,285.40/x
  3. Step 3: Cross multiply
    711,576.12x = 981,973.26 × 389,285.40
  4. Step 4: Simplify right side
    711,576.12x = 382,267,853,308.40
  5. Step 5: Solve for x
    x = 382,267,853,308.40/711,576.12
  6. Step 6: Final answer
    x = 537,212.88

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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.