Home / 1,021,565.86-1,408,511.73-638,928.34

Finding the Fourth Proportional to 1,021,565.86, 1,408,511.73 and 638,928.34

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Solution

The fourth proportional to 1,021,565.86, 1,408,511.73 and 638,928.34 is: 880,939.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,565.86 : 1,408,511.73 = 638,928.34 : x
  2. Step 2: Convert to fraction form
    1,021,565.86/1,408,511.73 = 638,928.34/x
  3. Step 3: Cross multiply
    1,021,565.86x = 1,408,511.73 × 638,928.34
  4. Step 4: Simplify right side
    1,021,565.86x = 899,938,061,519.43
  5. Step 5: Solve for x
    x = 899,938,061,519.43/1,021,565.86
  6. Step 6: Final answer
    x = 880,939.84

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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.