Home / 639,139,802.04-881,962,692.30-391,587,498.36

Finding the Fourth Proportional to 639,139,802.04, 881,962,692.30 and 391,587,498.36

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Solution

The fourth proportional to 639,139,802.04, 881,962,692.30 and 391,587,498.36 is: 540,359,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,139,802.04 : 881,962,692.30 = 391,587,498.36 : x
  2. Step 2: Convert to fraction form
    639,139,802.04/881,962,692.30 = 391,587,498.36/x
  3. Step 3: Cross multiply
    639,139,802.04x = 881,962,692.30 × 391,587,498.36
  4. Step 4: Simplify right side
    639,139,802.04x = 345,365,564,324,607,424
  5. Step 5: Solve for x
    x = 345,365,564,324,607,424/639,139,802.04
  6. Step 6: Final answer
    x = 540,359,970.11

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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.