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Finding the Fourth Proportional to 581,616.80, 815,922.40 and 581,616.80

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Solution

The fourth proportional to 581,616.80, 815,922.40 and 581,616.80 is: 815,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,616.80 : 815,922.40 = 581,616.80 : x
  2. Step 2: Convert to fraction form
    581,616.80/815,922.40 = 581,616.80/x
  3. Step 3: Cross multiply
    581,616.80x = 815,922.40 × 581,616.80
  4. Step 4: Simplify right side
    581,616.80x = 474,554,175,336.32
  5. Step 5: Solve for x
    x = 474,554,175,336.32/581,616.80
  6. Step 6: Final answer
    x = 815,922.40

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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.