Home / 1,130,421.10-1,695,631.65-978,205.90

Finding the Fourth Proportional to 1,130,421.10, 1,695,631.65 and 978,205.90

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Solution

The fourth proportional to 1,130,421.10, 1,695,631.65 and 978,205.90 is: 1,467,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,421.10 : 1,695,631.65 = 978,205.90 : x
  2. Step 2: Convert to fraction form
    1,130,421.10/1,695,631.65 = 978,205.90/x
  3. Step 3: Cross multiply
    1,130,421.10x = 1,695,631.65 × 978,205.90
  4. Step 4: Simplify right side
    1,130,421.10x = 1,658,676,884,256.74
  5. Step 5: Solve for x
    x = 1,658,676,884,256.74/1,130,421.10
  6. Step 6: Final answer
    x = 1,467,308.85

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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.