Home / 1,125,779.90-1,553,585.43-666,920.57

Finding the Fourth Proportional to 1,125,779.90, 1,553,585.43 and 666,920.57

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Solution

The fourth proportional to 1,125,779.90, 1,553,585.43 and 666,920.57 is: 920,355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,779.90 : 1,553,585.43 = 666,920.57 : x
  2. Step 2: Convert to fraction form
    1,125,779.90/1,553,585.43 = 666,920.57/x
  3. Step 3: Cross multiply
    1,125,779.90x = 1,553,585.43 × 666,920.57
  4. Step 4: Simplify right side
    1,125,779.90x = 1,036,118,080,519.30
  5. Step 5: Solve for x
    x = 1,036,118,080,519.30/1,125,779.90
  6. Step 6: Final answer
    x = 920,355.82

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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.