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Finding the Fourth Proportional to 478,955.08, 660,271.39 and 376,803.39

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Solution

The fourth proportional to 478,955.08, 660,271.39 and 376,803.39 is: 519,448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,955.08 : 660,271.39 = 376,803.39 : x
  2. Step 2: Convert to fraction form
    478,955.08/660,271.39 = 376,803.39/x
  3. Step 3: Cross multiply
    478,955.08x = 660,271.39 × 376,803.39
  4. Step 4: Simplify right side
    478,955.08x = 248,792,498,072.01
  5. Step 5: Solve for x
    x = 248,792,498,072.01/478,955.08
  6. Step 6: Final answer
    x = 519,448.50

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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.