Home / 1,272,376.56-1,908,159.88-419,289.02

Finding the Fourth Proportional to 1,272,376.56, 1,908,159.88 and 419,289.02

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Solution

The fourth proportional to 1,272,376.56, 1,908,159.88 and 419,289.02 is: 628,800.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,376.56 : 1,908,159.88 = 419,289.02 : x
  2. Step 2: Convert to fraction form
    1,272,376.56/1,908,159.88 = 419,289.02/x
  3. Step 3: Cross multiply
    1,272,376.56x = 1,908,159.88 × 419,289.02
  4. Step 4: Simplify right side
    1,272,376.56x = 800,070,486,088.52
  5. Step 5: Solve for x
    x = 800,070,486,088.52/1,272,376.56
  6. Step 6: Final answer
    x = 628,800.08

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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.