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Finding the Fourth Proportional to 665,866.04, 918,670.06 and 379,182.84

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Solution

The fourth proportional to 665,866.04, 918,670.06 and 379,182.84 is: 523,144.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,866.04 : 918,670.06 = 379,182.84 : x
  2. Step 2: Convert to fraction form
    665,866.04/918,670.06 = 379,182.84/x
  3. Step 3: Cross multiply
    665,866.04x = 918,670.06 × 379,182.84
  4. Step 4: Simplify right side
    665,866.04x = 348,343,922,373.77
  5. Step 5: Solve for x
    x = 348,343,922,373.77/665,866.04
  6. Step 6: Final answer
    x = 523,144.15

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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.