Home / 711,483.23-981,833.95-389,190.51

Finding the Fourth Proportional to 711,483.23, 981,833.95 and 389,190.51

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Solution

The fourth proportional to 711,483.23, 981,833.95 and 389,190.51 is: 537,075.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,483.23 : 981,833.95 = 389,190.51 : x
  2. Step 2: Convert to fraction form
    711,483.23/981,833.95 = 389,190.51/x
  3. Step 3: Cross multiply
    711,483.23x = 981,833.95 × 389,190.51
  4. Step 4: Simplify right side
    711,483.23x = 382,120,455,735.82
  5. Step 5: Solve for x
    x = 382,120,455,735.82/711,483.23
  6. Step 6: Final answer
    x = 537,075.84

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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.