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Finding the Fourth Proportional to 713,089.76, 984,041.60 and 390,794.00

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Solution

The fourth proportional to 713,089.76, 984,041.60 and 390,794.00 is: 539,283.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,089.76 : 984,041.60 = 390,794.00 : x
  2. Step 2: Convert to fraction form
    713,089.76/984,041.60 = 390,794.00/x
  3. Step 3: Cross multiply
    713,089.76x = 984,041.60 × 390,794.00
  4. Step 4: Simplify right side
    713,089.76x = 384,557,546,156.22
  5. Step 5: Solve for x
    x = 384,557,546,156.22/713,089.76
  6. Step 6: Final answer
    x = 539,283.51

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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.