Home / 881,899,908.04-1,217,012,215.24-485,414,420.68

Finding the Fourth Proportional to 881,899,908.04, 1,217,012,215.24 and 485,414,420.68

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Solution

The fourth proportional to 881,899,908.04, 1,217,012,215.24 and 485,414,420.68 is: 669,866,584.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,899,908.04 : 1,217,012,215.24 = 485,414,420.68 : x
  2. Step 2: Convert to fraction form
    881,899,908.04/1,217,012,215.24 = 485,414,420.68/x
  3. Step 3: Cross multiply
    881,899,908.04x = 1,217,012,215.24 × 485,414,420.68
  4. Step 4: Simplify right side
    881,899,908.04x = 590,755,279,421,208,064
  5. Step 5: Solve for x
    x = 590,755,279,421,208,064/881,899,908.04
  6. Step 6: Final answer
    x = 669,866,584.67

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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.