Home / 1,130,431.10-1,695,646.65-978,215.90

Finding the Fourth Proportional to 1,130,431.10, 1,695,646.65 and 978,215.90

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Solution

The fourth proportional to 1,130,431.10, 1,695,646.65 and 978,215.90 is: 1,467,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,431.10 : 1,695,646.65 = 978,215.90 : x
  2. Step 2: Convert to fraction form
    1,130,431.10/1,695,646.65 = 978,215.90/x
  3. Step 3: Cross multiply
    1,130,431.10x = 1,695,646.65 × 978,215.90
  4. Step 4: Simplify right side
    1,130,431.10x = 1,658,708,513,811.74
  5. Step 5: Solve for x
    x = 1,658,708,513,811.74/1,130,431.10
  6. Step 6: Final answer
    x = 1,467,323.85

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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.