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Finding the Fourth Proportional to 556,604.40, 780,820.80 and 556,604.40

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Solution

The fourth proportional to 556,604.40, 780,820.80 and 556,604.40 is: 780,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,604.40 : 780,820.80 = 556,604.40 : x
  2. Step 2: Convert to fraction form
    556,604.40/780,820.80 = 556,604.40/x
  3. Step 3: Cross multiply
    556,604.40x = 780,820.80 × 556,604.40
  4. Step 4: Simplify right side
    556,604.40x = 434,608,292,891.52
  5. Step 5: Solve for x
    x = 434,608,292,891.52/556,604.40
  6. Step 6: Final answer
    x = 780,820.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.