Home / 710,913.46-981,058.35-388,623.70

Finding the Fourth Proportional to 710,913.46, 981,058.35 and 388,623.70

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Solution

The fourth proportional to 710,913.46, 981,058.35 and 388,623.70 is: 536,299.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,913.46 : 981,058.35 = 388,623.70 : x
  2. Step 2: Convert to fraction form
    710,913.46/981,058.35 = 388,623.70/x
  3. Step 3: Cross multiply
    710,913.46x = 981,058.35 × 388,623.70
  4. Step 4: Simplify right side
    710,913.46x = 381,262,525,892.90
  5. Step 5: Solve for x
    x = 381,262,525,892.90/710,913.46
  6. Step 6: Final answer
    x = 536,299.49

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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.