Home / 487,780,389.47-731,814,313.84-196,497,621.11

Finding the Fourth Proportional to 487,780,389.47, 731,814,313.84 and 196,497,621.11

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Solution

The fourth proportional to 487,780,389.47, 731,814,313.84 and 196,497,621.11 is: 294,804,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,780,389.47 : 731,814,313.84 = 196,497,621.11 : x
  2. Step 2: Convert to fraction form
    487,780,389.47/731,814,313.84 = 196,497,621.11/x
  3. Step 3: Cross multiply
    487,780,389.47x = 731,814,313.84 × 196,497,621.11
  4. Step 4: Simplify right side
    487,780,389.47x = 143,799,771,763,501,296
  5. Step 5: Solve for x
    x = 143,799,771,763,501,296/487,780,389.47
  6. Step 6: Final answer
    x = 294,804,331.76

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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.