Home / 390,916,379.34-585,481,522.95-186,587,943.66

Finding the Fourth Proportional to 390,916,379.34, 585,481,522.95 and 186,587,943.66

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Solution

The fourth proportional to 390,916,379.34, 585,481,522.95 and 186,587,943.66 is: 279,455,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,916,379.34 : 585,481,522.95 = 186,587,943.66 : x
  2. Step 2: Convert to fraction form
    390,916,379.34/585,481,522.95 = 186,587,943.66/x
  3. Step 3: Cross multiply
    390,916,379.34x = 585,481,522.95 × 186,587,943.66
  4. Step 4: Simplify right side
    390,916,379.34x = 109,243,793,418,165,600
  5. Step 5: Solve for x
    x = 109,243,793,418,165,600/390,916,379.34
  6. Step 6: Final answer
    x = 279,455,656.48

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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.