Home / 991,711.20-1,487,566.80-571,807.20

Finding the Fourth Proportional to 991,711.20, 1,487,566.80 and 571,807.20

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Solution

The fourth proportional to 991,711.20, 1,487,566.80 and 571,807.20 is: 857,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,711.20 : 1,487,566.80 = 571,807.20 : x
  2. Step 2: Convert to fraction form
    991,711.20/1,487,566.80 = 571,807.20/x
  3. Step 3: Cross multiply
    991,711.20x = 1,487,566.80 × 571,807.20
  4. Step 4: Simplify right side
    991,711.20x = 850,601,406,720.96
  5. Step 5: Solve for x
    x = 850,601,406,720.96/991,711.20
  6. Step 6: Final answer
    x = 857,710.80

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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.