Home / 520,243,015,661.90-717,877,134,791.56-288,766,291,230.45

Finding the Fourth Proportional to 520,243,015,661.90, 717,877,134,791.56 and 288,766,291,230.45

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Solution

The fourth proportional to 520,243,015,661.90, 717,877,134,791.56 and 288,766,291,230.45 is: 398,465,162,495.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,661.90 : 717,877,134,791.56 = 288,766,291,230.45 : x
  2. Step 2: Convert to fraction form
    520,243,015,661.90/717,877,134,791.56 = 288,766,291,230.45/x
  3. Step 3: Cross multiply
    520,243,015,661.90x = 717,877,134,791.56 × 288,766,291,230.45
  4. Step 4: Simplify right side
    520,243,015,661.90x = 207,298,717,772,900,642,848,768
  5. Step 5: Solve for x
    x = 207,298,717,772,900,642,848,768/520,243,015,661.90
  6. Step 6: Final answer
    x = 398,465,162,495.56

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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.