Home / 685,136,590.71-945,326,427.43-387,778,832.87

Finding the Fourth Proportional to 685,136,590.71, 945,326,427.43 and 387,778,832.87

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Solution

The fourth proportional to 685,136,590.71, 945,326,427.43 and 387,778,832.87 is: 535,043,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,136,590.71 : 945,326,427.43 = 387,778,832.87 : x
  2. Step 2: Convert to fraction form
    685,136,590.71/945,326,427.43 = 387,778,832.87/x
  3. Step 3: Cross multiply
    685,136,590.71x = 945,326,427.43 × 387,778,832.87
  4. Step 4: Simplify right side
    685,136,590.71x = 366,577,578,704,276,096
  5. Step 5: Solve for x
    x = 366,577,578,704,276,096/685,136,590.71
  6. Step 6: Final answer
    x = 535,043,061.01

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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.