Home / 710,881.41-981,031.55-388,621.50

Finding the Fourth Proportional to 710,881.41, 981,031.55 and 388,621.50

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Solution

The fourth proportional to 710,881.41, 981,031.55 and 388,621.50 is: 536,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,881.41 : 981,031.55 = 388,621.50 : x
  2. Step 2: Convert to fraction form
    710,881.41/981,031.55 = 388,621.50/x
  3. Step 3: Cross multiply
    710,881.41x = 981,031.55 × 388,621.50
  4. Step 4: Simplify right side
    710,881.41x = 381,249,949,072.35
  5. Step 5: Solve for x
    x = 381,249,949,072.35/710,881.41
  6. Step 6: Final answer
    x = 536,305.97

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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.