Home / 711,459.10-981,792.72-389,162.26

Finding the Fourth Proportional to 711,459.10, 981,792.72 and 389,162.26

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Solution

The fourth proportional to 711,459.10, 981,792.72 and 389,162.26 is: 537,032.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,459.10 : 981,792.72 = 389,162.26 : x
  2. Step 2: Convert to fraction form
    711,459.10/981,792.72 = 389,162.26/x
  3. Step 3: Cross multiply
    711,459.10x = 981,792.72 × 389,162.26
  4. Step 4: Simplify right side
    711,459.10x = 382,076,673,766.75
  5. Step 5: Solve for x
    x = 382,076,673,766.75/711,459.10
  6. Step 6: Final answer
    x = 537,032.52

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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.