Home / 739,498.90-1,020,509.67-399,967.42

Finding the Fourth Proportional to 739,498.90, 1,020,509.67 and 399,967.42

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Solution

The fourth proportional to 739,498.90, 1,020,509.67 and 399,967.42 is: 551,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,498.90 : 1,020,509.67 = 399,967.42 : x
  2. Step 2: Convert to fraction form
    739,498.90/1,020,509.67 = 399,967.42/x
  3. Step 3: Cross multiply
    739,498.90x = 1,020,509.67 × 399,967.42
  4. Step 4: Simplify right side
    739,498.90x = 408,170,619,794.95
  5. Step 5: Solve for x
    x = 408,170,619,794.95/739,498.90
  6. Step 6: Final answer
    x = 551,955.68

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1.5x scale

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.