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Finding the Fourth Proportional to 615,363.84, 848,724.48 and 388,926.72

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Solution

The fourth proportional to 615,363.84, 848,724.48 and 388,926.72 is: 536,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,363.84 : 848,724.48 = 388,926.72 : x
  2. Step 2: Convert to fraction form
    615,363.84/848,724.48 = 388,926.72/x
  3. Step 3: Cross multiply
    615,363.84x = 848,724.48 × 388,926.72
  4. Step 4: Simplify right side
    615,363.84x = 330,091,628,190.11
  5. Step 5: Solve for x
    x = 330,091,628,190.11/615,363.84
  6. Step 6: Final answer
    x = 536,417.01

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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.