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Finding the Fourth Proportional to 704,987.58, 972,898.02 and 399,064.35

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Solution

The fourth proportional to 704,987.58, 972,898.02 and 399,064.35 is: 550,717.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,987.58 : 972,898.02 = 399,064.35 : x
  2. Step 2: Convert to fraction form
    704,987.58/972,898.02 = 399,064.35/x
  3. Step 3: Cross multiply
    704,987.58x = 972,898.02 × 399,064.35
  4. Step 4: Simplify right side
    704,987.58x = 388,248,915,967.59
  5. Step 5: Solve for x
    x = 388,248,915,967.59/704,987.58
  6. Step 6: Final answer
    x = 550,717.38

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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.