Home / 711,036.48-981,230.88-388,741.44

Finding the Fourth Proportional to 711,036.48, 981,230.88 and 388,741.44

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Solution

The fourth proportional to 711,036.48, 981,230.88 and 388,741.44 is: 536,463.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,036.48 : 981,230.88 = 388,741.44 : x
  2. Step 2: Convert to fraction form
    711,036.48/981,230.88 = 388,741.44/x
  3. Step 3: Cross multiply
    711,036.48x = 981,230.88 × 388,741.44
  4. Step 4: Simplify right side
    711,036.48x = 381,445,105,263.67
  5. Step 5: Solve for x
    x = 381,445,105,263.67/711,036.48
  6. Step 6: Final answer
    x = 536,463.48

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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.