Home / 711,206.04-981,465.30-388,915.14

Finding the Fourth Proportional to 711,206.04, 981,465.30 and 388,915.14

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Solution

The fourth proportional to 711,206.04, 981,465.30 and 388,915.14 is: 536,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,206.04 : 981,465.30 = 388,915.14 : x
  2. Step 2: Convert to fraction form
    711,206.04/981,465.30 = 388,915.14/x
  3. Step 3: Cross multiply
    711,206.04x = 981,465.30 × 388,915.14
  4. Step 4: Simplify right side
    711,206.04x = 381,706,714,554.64
  5. Step 5: Solve for x
    x = 381,706,714,554.64/711,206.04
  6. Step 6: Final answer
    x = 536,703.42

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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.