Home / 712,388.31-983,059.23-390,036.06

Finding the Fourth Proportional to 712,388.31, 983,059.23 and 390,036.06

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Solution

The fourth proportional to 712,388.31, 983,059.23 and 390,036.06 is: 538,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,388.31 : 983,059.23 = 390,036.06 : x
  2. Step 2: Convert to fraction form
    712,388.31/983,059.23 = 390,036.06/x
  3. Step 3: Cross multiply
    712,388.31x = 983,059.23 × 390,036.06
  4. Step 4: Simplify right side
    712,388.31x = 383,428,548,815.83
  5. Step 5: Solve for x
    x = 383,428,548,815.83/712,388.31
  6. Step 6: Final answer
    x = 538,229.70

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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.