Home / 992,467.80-1,489,139.10-459,714.60

Finding the Fourth Proportional to 992,467.80, 1,489,139.10 and 459,714.60

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Solution

The fourth proportional to 992,467.80, 1,489,139.10 and 459,714.60 is: 689,774.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,467.80 : 1,489,139.10 = 459,714.60 : x
  2. Step 2: Convert to fraction form
    992,467.80/1,489,139.10 = 459,714.60/x
  3. Step 3: Cross multiply
    992,467.80x = 1,489,139.10 × 459,714.60
  4. Step 4: Simplify right side
    992,467.80x = 684,578,985,700.86
  5. Step 5: Solve for x
    x = 684,578,985,700.86/992,467.80
  6. Step 6: Final answer
    x = 689,774.51

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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.