Home / 649,462,156.24-896,387,980.90-385,290,781.24

Finding the Fourth Proportional to 649,462,156.24, 896,387,980.90 and 385,290,781.24

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Solution

The fourth proportional to 649,462,156.24, 896,387,980.90 and 385,290,781.24 is: 531,778,521.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,462,156.24 : 896,387,980.90 = 385,290,781.24 : x
  2. Step 2: Convert to fraction form
    649,462,156.24/896,387,980.90 = 385,290,781.24/x
  3. Step 3: Cross multiply
    649,462,156.24x = 896,387,980.90 × 385,290,781.24
  4. Step 4: Simplify right side
    649,462,156.24x = 345,370,025,455,107,200
  5. Step 5: Solve for x
    x = 345,370,025,455,107,200/649,462,156.24
  6. Step 6: Final answer
    x = 531,778,521.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.