Home / 717,894,950.45-990,693,073.46-400,355,541.23

Finding the Fourth Proportional to 717,894,950.45, 990,693,073.46 and 400,355,541.23

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Solution

The fourth proportional to 717,894,950.45, 990,693,073.46 and 400,355,541.23 is: 552,489,554.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,894,950.45 : 990,693,073.46 = 400,355,541.23 : x
  2. Step 2: Convert to fraction form
    717,894,950.45/990,693,073.46 = 400,355,541.23/x
  3. Step 3: Cross multiply
    717,894,950.45x = 990,693,073.46 × 400,355,541.23
  4. Step 4: Simplify right side
    717,894,950.45x = 396,629,461,610,935,232
  5. Step 5: Solve for x
    x = 396,629,461,610,935,232/717,894,950.45
  6. Step 6: Final answer
    x = 552,489,554.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.