Home / 1,331,356.60-1,997,498.55-420,678.03

Finding the Fourth Proportional to 1,331,356.60, 1,997,498.55 and 420,678.03

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Solution

The fourth proportional to 1,331,356.60, 1,997,498.55 and 420,678.03 is: 631,163.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,356.60 : 1,997,498.55 = 420,678.03 : x
  2. Step 2: Convert to fraction form
    1,331,356.60/1,997,498.55 = 420,678.03/x
  3. Step 3: Cross multiply
    1,331,356.60x = 1,997,498.55 × 420,678.03
  4. Step 4: Simplify right side
    1,331,356.60x = 840,303,754,941.86
  5. Step 5: Solve for x
    x = 840,303,754,941.86/1,331,356.60
  6. Step 6: Final answer
    x = 631,163.55

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1.5x scale

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.