Home / 505,302,078.60-757,953,117.90-431,325,491.40

Finding the Fourth Proportional to 505,302,078.60, 757,953,117.90 and 431,325,491.40

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Solution

The fourth proportional to 505,302,078.60, 757,953,117.90 and 431,325,491.40 is: 646,988,237.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,302,078.60 : 757,953,117.90 = 431,325,491.40 : x
  2. Step 2: Convert to fraction form
    505,302,078.60/757,953,117.90 = 431,325,491.40/x
  3. Step 3: Cross multiply
    505,302,078.60x = 757,953,117.90 × 431,325,491.40
  4. Step 4: Simplify right side
    505,302,078.60x = 326,924,501,036,379,584
  5. Step 5: Solve for x
    x = 326,924,501,036,379,584/505,302,078.60
  6. Step 6: Final answer
    x = 646,988,237.10

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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.