Home / 865,933,818.88-1,298,900,703.21-399,457,227.40

Finding the Fourth Proportional to 865,933,818.88, 1,298,900,703.21 and 399,457,227.40

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Solution

The fourth proportional to 865,933,818.88, 1,298,900,703.21 and 399,457,227.40 is: 599,185,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,933,818.88 : 1,298,900,703.21 = 399,457,227.40 : x
  2. Step 2: Convert to fraction form
    865,933,818.88/1,298,900,703.21 = 399,457,227.40/x
  3. Step 3: Cross multiply
    865,933,818.88x = 1,298,900,703.21 × 399,457,227.40
  4. Step 4: Simplify right side
    865,933,818.88x = 518,855,273,572,176,896
  5. Step 5: Solve for x
    x = 518,855,273,572,176,896/865,933,818.88
  6. Step 6: Final answer
    x = 599,185,829.52

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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.