Home / 780,465.12-1,170,679.36-359,740.96

Finding the Fourth Proportional to 780,465.12, 1,170,679.36 and 359,740.96

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Solution

The fourth proportional to 780,465.12, 1,170,679.36 and 359,740.96 is: 539,603.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,465.12 : 1,170,679.36 = 359,740.96 : x
  2. Step 2: Convert to fraction form
    780,465.12/1,170,679.36 = 359,740.96/x
  3. Step 3: Cross multiply
    780,465.12x = 1,170,679.36 × 359,740.96
  4. Step 4: Simplify right side
    780,465.12x = 421,141,316,818.59
  5. Step 5: Solve for x
    x = 421,141,316,818.59/780,465.12
  6. Step 6: Final answer
    x = 539,603.00

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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.