Home / 712,732.88-983,568.48-390,442.52

Finding the Fourth Proportional to 712,732.88, 983,568.48 and 390,442.52

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Solution

The fourth proportional to 712,732.88, 983,568.48 and 390,442.52 is: 538,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,732.88 : 983,568.48 = 390,442.52 : x
  2. Step 2: Convert to fraction form
    712,732.88/983,568.48 = 390,442.52/x
  3. Step 3: Cross multiply
    712,732.88x = 983,568.48 × 390,442.52
  4. Step 4: Simplify right side
    712,732.88x = 384,026,955,923.77
  5. Step 5: Solve for x
    x = 384,026,955,923.77/712,732.88
  6. Step 6: Final answer
    x = 538,809.09

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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.