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Finding the Fourth Proportional to 713,014.63, 983,960.20 and 390,737.41

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Solution

The fourth proportional to 713,014.63, 983,960.20 and 390,737.41 is: 539,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,014.63 : 983,960.20 = 390,737.41 : x
  2. Step 2: Convert to fraction form
    713,014.63/983,960.20 = 390,737.41/x
  3. Step 3: Cross multiply
    713,014.63x = 983,960.20 × 390,737.41
  4. Step 4: Simplify right side
    713,014.63x = 384,470,055,171.28
  5. Step 5: Solve for x
    x = 384,470,055,171.28/713,014.63
  6. Step 6: Final answer
    x = 539,217.63

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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.