Home / 659,917.20-989,875.80-549,325.20

Finding the Fourth Proportional to 659,917.20, 989,875.80 and 549,325.20

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Solution

The fourth proportional to 659,917.20, 989,875.80 and 549,325.20 is: 823,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,917.20 : 989,875.80 = 549,325.20 : x
  2. Step 2: Convert to fraction form
    659,917.20/989,875.80 = 549,325.20/x
  3. Step 3: Cross multiply
    659,917.20x = 989,875.80 × 549,325.20
  4. Step 4: Simplify right side
    659,917.20x = 543,763,721,810.16
  5. Step 5: Solve for x
    x = 543,763,721,810.16/659,917.20
  6. Step 6: Final answer
    x = 823,987.80

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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.