Home / 408,078,405.80-613,312,002.30-355,525,087.40

Finding the Fourth Proportional to 408,078,405.80, 613,312,002.30 and 355,525,087.40

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Solution

The fourth proportional to 408,078,405.80, 613,312,002.30 and 355,525,087.40 is: 534,328,207.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,078,405.80 : 613,312,002.30 = 355,525,087.40 : x
  2. Step 2: Convert to fraction form
    408,078,405.80/613,312,002.30 = 355,525,087.40/x
  3. Step 3: Cross multiply
    408,078,405.80x = 613,312,002.30 × 355,525,087.40
  4. Step 4: Simplify right side
    408,078,405.80x = 218,047,803,221,176,480
  5. Step 5: Solve for x
    x = 218,047,803,221,176,480/408,078,405.80
  6. Step 6: Final answer
    x = 534,328,207.82

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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.