Home / 991,709.20-1,487,563.80-571,805.20

Finding the Fourth Proportional to 991,709.20, 1,487,563.80 and 571,805.20

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Solution

The fourth proportional to 991,709.20, 1,487,563.80 and 571,805.20 is: 857,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,709.20 : 1,487,563.80 = 571,805.20 : x
  2. Step 2: Convert to fraction form
    991,709.20/1,487,563.80 = 571,805.20/x
  3. Step 3: Cross multiply
    991,709.20x = 1,487,563.80 × 571,805.20
  4. Step 4: Simplify right side
    991,709.20x = 850,596,716,171.76
  5. Step 5: Solve for x
    x = 850,596,716,171.76/991,709.20
  6. Step 6: Final answer
    x = 857,707.80

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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.