Home / 711,482.23-981,832.58-389,189.51

Finding the Fourth Proportional to 711,482.23, 981,832.58 and 389,189.51

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Solution

The fourth proportional to 711,482.23, 981,832.58 and 389,189.51 is: 537,074.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,482.23 : 981,832.58 = 389,189.51 : x
  2. Step 2: Convert to fraction form
    711,482.23/981,832.58 = 389,189.51/x
  3. Step 3: Cross multiply
    711,482.23x = 981,832.58 × 389,189.51
  4. Step 4: Simplify right side
    711,482.23x = 382,118,933,857.13
  5. Step 5: Solve for x
    x = 382,118,933,857.13/711,482.23
  6. Step 6: Final answer
    x = 537,074.46

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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.