Home / 1,051,570.40-1,577,355.60-420,936.80

Finding the Fourth Proportional to 1,051,570.40, 1,577,355.60 and 420,936.80

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Solution

The fourth proportional to 1,051,570.40, 1,577,355.60 and 420,936.80 is: 631,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,570.40 : 1,577,355.60 = 420,936.80 : x
  2. Step 2: Convert to fraction form
    1,051,570.40/1,577,355.60 = 420,936.80/x
  3. Step 3: Cross multiply
    1,051,570.40x = 1,577,355.60 × 420,936.80
  4. Step 4: Simplify right side
    1,051,570.40x = 663,967,018,726.08
  5. Step 5: Solve for x
    x = 663,967,018,726.08/1,051,570.40
  6. Step 6: Final answer
    x = 631,405.20

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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.