Home / 920,899.53-1,270,880.55-513,000.87

Finding the Fourth Proportional to 920,899.53, 1,270,880.55 and 513,000.87

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Solution

The fourth proportional to 920,899.53, 1,270,880.55 and 513,000.87 is: 707,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,899.53 : 1,270,880.55 = 513,000.87 : x
  2. Step 2: Convert to fraction form
    920,899.53/1,270,880.55 = 513,000.87/x
  3. Step 3: Cross multiply
    920,899.53x = 1,270,880.55 × 513,000.87
  4. Step 4: Simplify right side
    920,899.53x = 651,962,825,251.07
  5. Step 5: Solve for x
    x = 651,962,825,251.07/920,899.53
  6. Step 6: Final answer
    x = 707,963.04

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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.