Home / 710,979.48-981,111.96-388,625.40

Finding the Fourth Proportional to 710,979.48, 981,111.96 and 388,625.40

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Solution

The fourth proportional to 710,979.48, 981,111.96 and 388,625.40 is: 536,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,979.48 : 981,111.96 = 388,625.40 : x
  2. Step 2: Convert to fraction form
    710,979.48/981,111.96 = 388,625.40/x
  3. Step 3: Cross multiply
    710,979.48x = 981,111.96 × 388,625.40
  4. Step 4: Simplify right side
    710,979.48x = 381,285,027,899.78
  5. Step 5: Solve for x
    x = 381,285,027,899.78/710,979.48
  6. Step 6: Final answer
    x = 536,281.34

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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.