Home / 711,544.17-981,938.70-389,247.35

Finding the Fourth Proportional to 711,544.17, 981,938.70 and 389,247.35

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Solution

The fourth proportional to 711,544.17, 981,938.70 and 389,247.35 is: 537,165.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,544.17 : 981,938.70 = 389,247.35 : x
  2. Step 2: Convert to fraction form
    711,544.17/981,938.70 = 389,247.35/x
  3. Step 3: Cross multiply
    711,544.17x = 981,938.70 × 389,247.35
  4. Step 4: Simplify right side
    711,544.17x = 382,217,031,927.75
  5. Step 5: Solve for x
    x = 382,217,031,927.75/711,544.17
  6. Step 6: Final answer
    x = 537,165.57

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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.