Home / 485,215,429.68-727,082,533.80-288,090,664.38

Finding the Fourth Proportional to 485,215,429.68, 727,082,533.80 and 288,090,664.38

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Solution

The fourth proportional to 485,215,429.68, 727,082,533.80 and 288,090,664.38 is: 431,696,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,215,429.68 : 727,082,533.80 = 288,090,664.38 : x
  2. Step 2: Convert to fraction form
    485,215,429.68/727,082,533.80 = 288,090,664.38/x
  3. Step 3: Cross multiply
    485,215,429.68x = 727,082,533.80 × 288,090,664.38
  4. Step 4: Simplify right side
    485,215,429.68x = 209,465,690,221,535,776
  5. Step 5: Solve for x
    x = 209,465,690,221,535,776/485,215,429.68
  6. Step 6: Final answer
    x = 431,696,268.11

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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.