Home / 930,860,145.39-1,284,596,899.89-513,187,377.48

Finding the Fourth Proportional to 930,860,145.39, 1,284,596,899.89 and 513,187,377.48

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Solution

The fourth proportional to 930,860,145.39, 1,284,596,899.89 and 513,187,377.48 is: 708,204,038.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,860,145.39 : 1,284,596,899.89 = 513,187,377.48 : x
  2. Step 2: Convert to fraction form
    930,860,145.39/1,284,596,899.89 = 513,187,377.48/x
  3. Step 3: Cross multiply
    930,860,145.39x = 1,284,596,899.89 × 513,187,377.48
  4. Step 4: Simplify right side
    930,860,145.39x = 659,238,914,173,487,232
  5. Step 5: Solve for x
    x = 659,238,914,173,487,232/930,860,145.39
  6. Step 6: Final answer
    x = 708,204,038.42

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Double scale
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1.5x scale

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.