Home / 712,977.27-983,891.66-390,671.79

Finding the Fourth Proportional to 712,977.27, 983,891.66 and 390,671.79

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Solution

The fourth proportional to 712,977.27, 983,891.66 and 390,671.79 is: 539,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,977.27 : 983,891.66 = 390,671.79 : x
  2. Step 2: Convert to fraction form
    712,977.27/983,891.66 = 390,671.79/x
  3. Step 3: Cross multiply
    712,977.27x = 983,891.66 × 390,671.79
  4. Step 4: Simplify right side
    712,977.27x = 384,378,714,024.91
  5. Step 5: Solve for x
    x = 384,378,714,024.91/712,977.27
  6. Step 6: Final answer
    x = 539,117.77

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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.