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Finding the Fourth Proportional to 553,634.80, 830,452.20 and 525,986.80

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Solution

The fourth proportional to 553,634.80, 830,452.20 and 525,986.80 is: 788,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,634.80 : 830,452.20 = 525,986.80 : x
  2. Step 2: Convert to fraction form
    553,634.80/830,452.20 = 525,986.80/x
  3. Step 3: Cross multiply
    553,634.80x = 830,452.20 × 525,986.80
  4. Step 4: Simplify right side
    553,634.80x = 436,806,895,230.96
  5. Step 5: Solve for x
    x = 436,806,895,230.96/553,634.80
  6. Step 6: Final answer
    x = 788,980.20

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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.