Home / 1,288,590.80-1,779,144.92-805,373.16

Finding the Fourth Proportional to 1,288,590.80, 1,779,144.92 and 805,373.16

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Solution

The fourth proportional to 1,288,590.80, 1,779,144.92 and 805,373.16 is: 1,111,970.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,590.80 : 1,779,144.92 = 805,373.16 : x
  2. Step 2: Convert to fraction form
    1,288,590.80/1,779,144.92 = 805,373.16/x
  3. Step 3: Cross multiply
    1,288,590.80x = 1,779,144.92 × 805,373.16
  4. Step 4: Simplify right side
    1,288,590.80x = 1,432,875,566,318.35
  5. Step 5: Solve for x
    x = 1,432,875,566,318.35/1,288,590.80
  6. Step 6: Final answer
    x = 1,111,970.97

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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.