Home / 712,735.62-983,599.64-390,445.62

Finding the Fourth Proportional to 712,735.62, 983,599.64 and 390,445.62

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Solution

The fourth proportional to 712,735.62, 983,599.64 and 390,445.62 is: 538,828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,735.62 : 983,599.64 = 390,445.62 : x
  2. Step 2: Convert to fraction form
    712,735.62/983,599.64 = 390,445.62/x
  3. Step 3: Cross multiply
    712,735.62x = 983,599.64 × 390,445.62
  4. Step 4: Simplify right side
    712,735.62x = 384,042,171,271.58
  5. Step 5: Solve for x
    x = 384,042,171,271.58/712,735.62
  6. Step 6: Final answer
    x = 538,828.37

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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.