Home / 1,008,390.72-1,391,513.60-555,681.68

Finding the Fourth Proportional to 1,008,390.72, 1,391,513.60 and 555,681.68

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Solution

The fourth proportional to 1,008,390.72, 1,391,513.60 and 555,681.68 is: 766,804.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,390.72 : 1,391,513.60 = 555,681.68 : x
  2. Step 2: Convert to fraction form
    1,008,390.72/1,391,513.60 = 555,681.68/x
  3. Step 3: Cross multiply
    1,008,390.72x = 1,391,513.60 × 555,681.68
  4. Step 4: Simplify right side
    1,008,390.72x = 773,238,614,990.85
  5. Step 5: Solve for x
    x = 773,238,614,990.85/1,008,390.72
  6. Step 6: Final answer
    x = 766,804.57

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1.5x scale

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.