Home / 711,480.10-981,829.64-389,187.38

Finding the Fourth Proportional to 711,480.10, 981,829.64 and 389,187.38

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Solution

The fourth proportional to 711,480.10, 981,829.64 and 389,187.38 is: 537,071.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,480.10 : 981,829.64 = 389,187.38 : x
  2. Step 2: Convert to fraction form
    711,480.10/981,829.64 = 389,187.38/x
  3. Step 3: Cross multiply
    711,480.10x = 981,829.64 × 389,187.38
  4. Step 4: Simplify right side
    711,480.10x = 382,115,705,197.94
  5. Step 5: Solve for x
    x = 382,115,705,197.94/711,480.10
  6. Step 6: Final answer
    x = 537,071.53

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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.