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Finding the Fourth Proportional to 704,558.50, 972,290.79 and 402,758.98

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Solution

The fourth proportional to 704,558.50, 972,290.79 and 402,758.98 is: 555,807.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,558.50 : 972,290.79 = 402,758.98 : x
  2. Step 2: Convert to fraction form
    704,558.50/972,290.79 = 402,758.98/x
  3. Step 3: Cross multiply
    704,558.50x = 972,290.79 × 402,758.98
  4. Step 4: Simplify right side
    704,558.50x = 391,598,846,843.79
  5. Step 5: Solve for x
    x = 391,598,846,843.79/704,558.50
  6. Step 6: Final answer
    x = 555,807.43

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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.