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Finding the Fourth Proportional to 724,362.84, 999,573.48 and 402,057.36

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Solution

The fourth proportional to 724,362.84, 999,573.48 and 402,057.36 is: 554,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,362.84 : 999,573.48 = 402,057.36 : x
  2. Step 2: Convert to fraction form
    724,362.84/999,573.48 = 402,057.36/x
  3. Step 3: Cross multiply
    724,362.84x = 999,573.48 × 402,057.36
  4. Step 4: Simplify right side
    724,362.84x = 401,885,874,494.81
  5. Step 5: Solve for x
    x = 401,885,874,494.81/724,362.84
  6. Step 6: Final answer
    x = 554,812.94

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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.