Home / 865,459,592.81-1,298,199,361.93-312,803,992.97

Finding the Fourth Proportional to 865,459,592.81, 1,298,199,361.93 and 312,803,992.97

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Solution

The fourth proportional to 865,459,592.81, 1,298,199,361.93 and 312,803,992.97 is: 469,209,593.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,459,592.81 : 1,298,199,361.93 = 312,803,992.97 : x
  2. Step 2: Convert to fraction form
    865,459,592.81/1,298,199,361.93 = 312,803,992.97/x
  3. Step 3: Cross multiply
    865,459,592.81x = 1,298,199,361.93 × 312,803,992.97
  4. Step 4: Simplify right side
    865,459,592.81x = 406,081,944,083,592,192
  5. Step 5: Solve for x
    x = 406,081,944,083,592,192/865,459,592.81
  6. Step 6: Final answer
    x = 469,209,593.91

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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.