Home / 390,862,090.80-586,293,136.20-135,560,458.80

Finding the Fourth Proportional to 390,862,090.80, 586,293,136.20 and 135,560,458.80

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Solution

The fourth proportional to 390,862,090.80, 586,293,136.20 and 135,560,458.80 is: 203,340,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,862,090.80 : 586,293,136.20 = 135,560,458.80 : x
  2. Step 2: Convert to fraction form
    390,862,090.80/586,293,136.20 = 135,560,458.80/x
  3. Step 3: Cross multiply
    390,862,090.80x = 586,293,136.20 × 135,560,458.80
  4. Step 4: Simplify right side
    390,862,090.80x = 79,478,166,534,562,896
  5. Step 5: Solve for x
    x = 79,478,166,534,562,896/390,862,090.80
  6. Step 6: Final answer
    x = 203,340,688.20

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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.