Home / 1,098,986.70-1,648,674.45-389,426.70

Finding the Fourth Proportional to 1,098,986.70, 1,648,674.45 and 389,426.70

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Solution

The fourth proportional to 1,098,986.70, 1,648,674.45 and 389,426.70 is: 584,208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,986.70 : 1,648,674.45 = 389,426.70 : x
  2. Step 2: Convert to fraction form
    1,098,986.70/1,648,674.45 = 389,426.70/x
  3. Step 3: Cross multiply
    1,098,986.70x = 1,648,674.45 × 389,426.70
  4. Step 4: Simplify right side
    1,098,986.70x = 642,037,850,437.82
  5. Step 5: Solve for x
    x = 642,037,850,437.82/1,098,986.70
  6. Step 6: Final answer
    x = 584,208.94

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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.