Home / 920,987.59-1,271,002.11-513,089.21

Finding the Fourth Proportional to 920,987.59, 1,271,002.11 and 513,089.21

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Solution

The fourth proportional to 920,987.59, 1,271,002.11 and 513,089.21 is: 708,084.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,987.59 : 1,271,002.11 = 513,089.21 : x
  2. Step 2: Convert to fraction form
    920,987.59/1,271,002.11 = 513,089.21/x
  3. Step 3: Cross multiply
    920,987.59x = 1,271,002.11 × 513,089.21
  4. Step 4: Simplify right side
    920,987.59x = 652,137,468,528.23
  5. Step 5: Solve for x
    x = 652,137,468,528.23/920,987.59
  6. Step 6: Final answer
    x = 708,084.97

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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.