Home / 712,466.69-983,207.18-390,179.03

Finding the Fourth Proportional to 712,466.69, 983,207.18 and 390,179.03

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Solution

The fourth proportional to 712,466.69, 983,207.18 and 390,179.03 is: 538,448.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,466.69 : 983,207.18 = 390,179.03 : x
  2. Step 2: Convert to fraction form
    712,466.69/983,207.18 = 390,179.03/x
  3. Step 3: Cross multiply
    712,466.69x = 983,207.18 × 390,179.03
  4. Step 4: Simplify right side
    712,466.69x = 383,626,821,830.54
  5. Step 5: Solve for x
    x = 383,626,821,830.54/712,466.69
  6. Step 6: Final answer
    x = 538,448.78

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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.