Home / 711,458.10-981,791.34-389,161.26

Finding the Fourth Proportional to 711,458.10, 981,791.34 and 389,161.26

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Solution

The fourth proportional to 711,458.10, 981,791.34 and 389,161.26 is: 537,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,458.10 : 981,791.34 = 389,161.26 : x
  2. Step 2: Convert to fraction form
    711,458.10/981,791.34 = 389,161.26/x
  3. Step 3: Cross multiply
    711,458.10x = 981,791.34 × 389,161.26
  4. Step 4: Simplify right side
    711,458.10x = 382,075,154,931.49
  5. Step 5: Solve for x
    x = 382,075,154,931.49/711,458.10
  6. Step 6: Final answer
    x = 537,031.14

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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.