Home / 328,066,578.80-492,062,543.40-85,753,977.20

Finding the Fourth Proportional to 328,066,578.80, 492,062,543.40 and 85,753,977.20

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Solution

The fourth proportional to 328,066,578.80, 492,062,543.40 and 85,753,977.20 is: 128,621,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,066,578.80 : 492,062,543.40 = 85,753,977.20 : x
  2. Step 2: Convert to fraction form
    328,066,578.80/492,062,543.40 = 85,753,977.20/x
  3. Step 3: Cross multiply
    328,066,578.80x = 492,062,543.40 × 85,753,977.20
  4. Step 4: Simplify right side
    328,066,578.80x = 42,196,320,127,697,608
  5. Step 5: Solve for x
    x = 42,196,320,127,697,608/328,066,578.80
  6. Step 6: Final answer
    x = 128,621,209.40

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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.