Home / 711,281.15-981,582.31-389,011.97

Finding the Fourth Proportional to 711,281.15, 981,582.31 and 389,011.97

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Solution

The fourth proportional to 711,281.15, 981,582.31 and 389,011.97 is: 536,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,281.15 : 981,582.31 = 389,011.97 : x
  2. Step 2: Convert to fraction form
    711,281.15/981,582.31 = 389,011.97/x
  3. Step 3: Cross multiply
    711,281.15x = 981,582.31 × 389,011.97
  4. Step 4: Simplify right side
    711,281.15x = 381,847,268,130.25
  5. Step 5: Solve for x
    x = 381,847,268,130.25/711,281.15
  6. Step 6: Final answer
    x = 536,844.35

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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.