Home / 485,215,427.93-727,082,531.35-288,090,662.85

Finding the Fourth Proportional to 485,215,427.93, 727,082,531.35 and 288,090,662.85

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Solution

The fourth proportional to 485,215,427.93, 727,082,531.35 and 288,090,662.85 is: 431,696,265.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,215,427.93 : 727,082,531.35 = 288,090,662.85 : x
  2. Step 2: Convert to fraction form
    485,215,427.93/727,082,531.35 = 288,090,662.85/x
  3. Step 3: Cross multiply
    485,215,427.93x = 727,082,531.35 × 288,090,662.85
  4. Step 4: Simplify right side
    485,215,427.93x = 209,465,688,402,557,184
  5. Step 5: Solve for x
    x = 209,465,688,402,557,184/485,215,427.93
  6. Step 6: Final answer
    x = 431,696,265.92

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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.