Home / 1,229,387.90-1,695,953.50-821,590.70

Finding the Fourth Proportional to 1,229,387.90, 1,695,953.50 and 821,590.70

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Solution

The fourth proportional to 1,229,387.90, 1,695,953.50 and 821,590.70 is: 1,133,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,387.90 : 1,695,953.50 = 821,590.70 : x
  2. Step 2: Convert to fraction form
    1,229,387.90/1,695,953.50 = 821,590.70/x
  3. Step 3: Cross multiply
    1,229,387.90x = 1,695,953.50 × 821,590.70
  4. Step 4: Simplify right side
    1,229,387.90x = 1,393,379,612,698.71
  5. Step 5: Solve for x
    x = 1,393,379,612,698.71/1,229,387.90
  6. Step 6: Final answer
    x = 1,133,392.98

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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.