Home / 920,899.02-1,270,879.85-513,000.37

Finding the Fourth Proportional to 920,899.02, 1,270,879.85 and 513,000.37

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Solution

The fourth proportional to 920,899.02, 1,270,879.85 and 513,000.37 is: 707,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,899.02 : 1,270,879.85 = 513,000.37 : x
  2. Step 2: Convert to fraction form
    920,899.02/1,270,879.85 = 513,000.37/x
  3. Step 3: Cross multiply
    920,899.02x = 1,270,879.85 × 513,000.37
  4. Step 4: Simplify right side
    920,899.02x = 651,961,836,146.65
  5. Step 5: Solve for x
    x = 651,961,836,146.65/920,899.02
  6. Step 6: Final answer
    x = 707,962.35

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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.