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Finding the Fourth Proportional to 666,526.74, 919,804.40 and 360,602.15

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Solution

The fourth proportional to 666,526.74, 919,804.40 and 360,602.15 is: 497,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,526.74 : 919,804.40 = 360,602.15 : x
  2. Step 2: Convert to fraction form
    666,526.74/919,804.40 = 360,602.15/x
  3. Step 3: Cross multiply
    666,526.74x = 919,804.40 × 360,602.15
  4. Step 4: Simplify right side
    666,526.74x = 331,683,437,817.43
  5. Step 5: Solve for x
    x = 331,683,437,817.43/666,526.74
  6. Step 6: Final answer
    x = 497,629.60

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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.