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Finding the Fourth Proportional to 620,452.80, 866,862.45 and 620,452.80

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Solution

The fourth proportional to 620,452.80, 866,862.45 and 620,452.80 is: 866,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,452.80 : 866,862.45 = 620,452.80 : x
  2. Step 2: Convert to fraction form
    620,452.80/866,862.45 = 620,452.80/x
  3. Step 3: Cross multiply
    620,452.80x = 866,862.45 × 620,452.80
  4. Step 4: Simplify right side
    620,452.80x = 537,847,234,317.36
  5. Step 5: Solve for x
    x = 537,847,234,317.36/620,452.80
  6. Step 6: Final answer
    x = 866,862.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.