Home / 704,988.58-972,899.40-399,065.35

Finding the Fourth Proportional to 704,988.58, 972,899.40 and 399,065.35

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Solution

The fourth proportional to 704,988.58, 972,899.40 and 399,065.35 is: 550,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,988.58 : 972,899.40 = 399,065.35 : x
  2. Step 2: Convert to fraction form
    704,988.58/972,899.40 = 399,065.35/x
  3. Step 3: Cross multiply
    704,988.58x = 972,899.40 × 399,065.35
  4. Step 4: Simplify right side
    704,988.58x = 388,250,439,575.79
  5. Step 5: Solve for x
    x = 388,250,439,575.79/704,988.58
  6. Step 6: Final answer
    x = 550,718.76

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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.