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Finding the Fourth Proportional to 715,137, 1,072,688.88 and 360,055.68

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Solution

The fourth proportional to 715,137, 1,072,688.88 and 360,055.68 is: 540,075.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,137 : 1,072,688.88 = 360,055.68 : x
  2. Step 2: Convert to fraction form
    715,137/1,072,688.88 = 360,055.68/x
  3. Step 3: Cross multiply
    715,137x = 1,072,688.88 × 360,055.68
  4. Step 4: Simplify right side
    715,137x = 386,227,724,116.84
  5. Step 5: Solve for x
    x = 386,227,724,116.84/715,137
  6. Step 6: Final answer
    x = 540,075.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.