Home / 420,950,180,829.15-631,462,391,048.80-118,765,427,916.87

Finding the Fourth Proportional to 420,950,180,829.15, 631,462,391,048.80 and 118,765,427,916.87

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Solution

The fourth proportional to 420,950,180,829.15, 631,462,391,048.80 and 118,765,427,916.87 is: 178,158,614,728.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,950,180,829.15 : 631,462,391,048.80 = 118,765,427,916.87 : x
  2. Step 2: Convert to fraction form
    420,950,180,829.15/631,462,391,048.80 = 118,765,427,916.87/x
  3. Step 3: Cross multiply
    420,950,180,829.15x = 631,462,391,048.80 × 118,765,427,916.87
  4. Step 4: Simplify right side
    420,950,180,829.15x = 74,995,901,086,320,637,771,776
  5. Step 5: Solve for x
    x = 74,995,901,086,320,637,771,776/420,950,180,829.15
  6. Step 6: Final answer
    x = 178,158,614,728.71

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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.