Home / 703,567,805.45-971,039,963.77-390,402,910.17

Finding the Fourth Proportional to 703,567,805.45, 971,039,963.77 and 390,402,910.17

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Solution

The fourth proportional to 703,567,805.45, 971,039,963.77 and 390,402,910.17 is: 538,820,600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,567,805.45 : 971,039,963.77 = 390,402,910.17 : x
  2. Step 2: Convert to fraction form
    703,567,805.45/971,039,963.77 = 390,402,910.17/x
  3. Step 3: Cross multiply
    703,567,805.45x = 971,039,963.77 × 390,402,910.17
  4. Step 4: Simplify right side
    703,567,805.45x = 379,096,827,746,203,392
  5. Step 5: Solve for x
    x = 379,096,827,746,203,392/703,567,805.45
  6. Step 6: Final answer
    x = 538,820,600.96

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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.