Home / 907,656.20-1,361,921.70-640,842.20

Finding the Fourth Proportional to 907,656.20, 1,361,921.70 and 640,842.20

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Solution

The fourth proportional to 907,656.20, 1,361,921.70 and 640,842.20 is: 961,572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,656.20 : 1,361,921.70 = 640,842.20 : x
  2. Step 2: Convert to fraction form
    907,656.20/1,361,921.70 = 640,842.20/x
  3. Step 3: Cross multiply
    907,656.20x = 1,361,921.70 × 640,842.20
  4. Step 4: Simplify right side
    907,656.20x = 872,776,898,455.74
  5. Step 5: Solve for x
    x = 872,776,898,455.74/907,656.20
  6. Step 6: Final answer
    x = 961,572.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.