Home / 920,988.60-1,271,003.50-513,090.22

Finding the Fourth Proportional to 920,988.60, 1,271,003.50 and 513,090.22

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Solution

The fourth proportional to 920,988.60, 1,271,003.50 and 513,090.22 is: 708,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,988.60 : 1,271,003.50 = 513,090.22 : x
  2. Step 2: Convert to fraction form
    920,988.60/1,271,003.50 = 513,090.22/x
  3. Step 3: Cross multiply
    920,988.60x = 1,271,003.50 × 513,090.22
  4. Step 4: Simplify right side
    920,988.60x = 652,139,465,435.77
  5. Step 5: Solve for x
    x = 652,139,465,435.77/920,988.60
  6. Step 6: Final answer
    x = 708,086.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.