Home / 786,320.40-1,180,355.40-487,138.80

Finding the Fourth Proportional to 786,320.40, 1,180,355.40 and 487,138.80

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Solution

The fourth proportional to 786,320.40, 1,180,355.40 and 487,138.80 is: 731,250.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,320.40 : 1,180,355.40 = 487,138.80 : x
  2. Step 2: Convert to fraction form
    786,320.40/1,180,355.40 = 487,138.80/x
  3. Step 3: Cross multiply
    786,320.40x = 1,180,355.40 × 487,138.80
  4. Step 4: Simplify right side
    786,320.40x = 574,996,913,129.52
  5. Step 5: Solve for x
    x = 574,996,913,129.52/786,320.40
  6. Step 6: Final answer
    x = 731,250.15

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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.