Home / 1,209,710.55-1,669,387.41-665,834.70

Finding the Fourth Proportional to 1,209,710.55, 1,669,387.41 and 665,834.70

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Solution

The fourth proportional to 1,209,710.55, 1,669,387.41 and 665,834.70 is: 918,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,710.55 : 1,669,387.41 = 665,834.70 : x
  2. Step 2: Convert to fraction form
    1,209,710.55/1,669,387.41 = 665,834.70/x
  3. Step 3: Cross multiply
    1,209,710.55x = 1,669,387.41 × 665,834.70
  4. Step 4: Simplify right side
    1,209,710.55x = 1,111,536,065,321.13
  5. Step 5: Solve for x
    x = 1,111,536,065,321.13/1,209,710.55
  6. Step 6: Final answer
    x = 918,844.65

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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.