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Finding the Fourth Proportional to 668,036.40, 999,721.80 and 467,415.60

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Solution

The fourth proportional to 668,036.40, 999,721.80 and 467,415.60 is: 699,491.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,036.40 : 999,721.80 = 467,415.60 : x
  2. Step 2: Convert to fraction form
    668,036.40/999,721.80 = 467,415.60/x
  3. Step 3: Cross multiply
    668,036.40x = 999,721.80 × 467,415.60
  4. Step 4: Simplify right side
    668,036.40x = 467,285,564,980.08
  5. Step 5: Solve for x
    x = 467,285,564,980.08/668,036.40
  6. Step 6: Final answer
    x = 699,491.17

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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.