Home / 713,020.94-983,969.58-390,731.75

Finding the Fourth Proportional to 713,020.94, 983,969.58 and 390,731.75

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Solution

The fourth proportional to 713,020.94, 983,969.58 and 390,731.75 is: 539,210.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,020.94 : 983,969.58 = 390,731.75 : x
  2. Step 2: Convert to fraction form
    713,020.94/983,969.58 = 390,731.75/x
  3. Step 3: Cross multiply
    713,020.94x = 983,969.58 × 390,731.75
  4. Step 4: Simplify right side
    713,020.94x = 384,468,151,020.32
  5. Step 5: Solve for x
    x = 384,468,151,020.32/713,020.94
  6. Step 6: Final answer
    x = 539,210.19

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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.