Home / 1,687,405.72-2,328,259.80-999,293.71

Finding the Fourth Proportional to 1,687,405.72, 2,328,259.80 and 999,293.71

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Solution

The fourth proportional to 1,687,405.72, 2,328,259.80 and 999,293.71 is: 1,378,812.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,405.72 : 2,328,259.80 = 999,293.71 : x
  2. Step 2: Convert to fraction form
    1,687,405.72/2,328,259.80 = 999,293.71/x
  3. Step 3: Cross multiply
    1,687,405.72x = 2,328,259.80 × 999,293.71
  4. Step 4: Simplify right side
    1,687,405.72x = 2,326,615,373,385.86
  5. Step 5: Solve for x
    x = 2,326,615,373,385.86/1,687,405.72
  6. Step 6: Final answer
    x = 1,378,812.07

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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.