Home / 659,867.40-989,400.15-260,047.35

Finding the Fourth Proportional to 659,867.40, 989,400.15 and 260,047.35

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Solution

The fourth proportional to 659,867.40, 989,400.15 and 260,047.35 is: 389,913.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,867.40 : 989,400.15 = 260,047.35 : x
  2. Step 2: Convert to fraction form
    659,867.40/989,400.15 = 260,047.35/x
  3. Step 3: Cross multiply
    659,867.40x = 989,400.15 × 260,047.35
  4. Step 4: Simplify right side
    659,867.40x = 257,290,887,097.10
  5. Step 5: Solve for x
    x = 257,290,887,097.10/659,867.40
  6. Step 6: Final answer
    x = 389,913.01

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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.