Home / 1,390,558.56-1,918,998-907,432.80

Finding the Fourth Proportional to 1,390,558.56, 1,918,998 and 907,432.80

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Solution

The fourth proportional to 1,390,558.56, 1,918,998 and 907,432.80 is: 1,252,275.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,558.56 : 1,918,998 = 907,432.80 : x
  2. Step 2: Convert to fraction form
    1,390,558.56/1,918,998 = 907,432.80/x
  3. Step 3: Cross multiply
    1,390,558.56x = 1,918,998 × 907,432.80
  4. Step 4: Simplify right side
    1,390,558.56x = 1,741,361,728,334.40
  5. Step 5: Solve for x
    x = 1,741,361,728,334.40/1,390,558.56
  6. Step 6: Final answer
    x = 1,252,275.01

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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.