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Finding the Fourth Proportional to 713,096.36, 984,074.37 and 390,818.42

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Solution

The fourth proportional to 713,096.36, 984,074.37 and 390,818.42 is: 539,330.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,096.36 : 984,074.37 = 390,818.42 : x
  2. Step 2: Convert to fraction form
    713,096.36/984,074.37 = 390,818.42/x
  3. Step 3: Cross multiply
    713,096.36x = 984,074.37 × 390,818.42
  4. Step 4: Simplify right side
    713,096.36x = 384,594,390,445.90
  5. Step 5: Solve for x
    x = 384,594,390,445.90/713,096.36
  6. Step 6: Final answer
    x = 539,330.18

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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.