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Finding the Fourth Proportional to 673,510.28, 1,009,729 and 388,877.98

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Solution

The fourth proportional to 673,510.28, 1,009,729 and 388,877.98 is: 583,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,510.28 : 1,009,729 = 388,877.98 : x
  2. Step 2: Convert to fraction form
    673,510.28/1,009,729 = 388,877.98/x
  3. Step 3: Cross multiply
    673,510.28x = 1,009,729 × 388,877.98
  4. Step 4: Simplify right side
    673,510.28x = 392,661,373,867.42
  5. Step 5: Solve for x
    x = 392,661,373,867.42/673,510.28
  6. Step 6: Final answer
    x = 583,007.25

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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.