Home / 671,965.40-1,007,948.10-620,643.80

Finding the Fourth Proportional to 671,965.40, 1,007,948.10 and 620,643.80

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Solution

The fourth proportional to 671,965.40, 1,007,948.10 and 620,643.80 is: 930,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,965.40 : 1,007,948.10 = 620,643.80 : x
  2. Step 2: Convert to fraction form
    671,965.40/1,007,948.10 = 620,643.80/x
  3. Step 3: Cross multiply
    671,965.40x = 1,007,948.10 × 620,643.80
  4. Step 4: Simplify right side
    671,965.40x = 625,576,738,986.78
  5. Step 5: Solve for x
    x = 625,576,738,986.78/671,965.40
  6. Step 6: Final answer
    x = 930,965.70

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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.