Home / 12,265,655,471.20-18,398,483,206.80-5,281,812,143.20

Finding the Fourth Proportional to 12,265,655,471.20, 18,398,483,206.80 and 5,281,812,143.20

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Solution

The fourth proportional to 12,265,655,471.20, 18,398,483,206.80 and 5,281,812,143.20 is: 7,922,718,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,265,655,471.20 : 18,398,483,206.80 = 5,281,812,143.20 : x
  2. Step 2: Convert to fraction form
    12,265,655,471.20/18,398,483,206.80 = 5,281,812,143.20/x
  3. Step 3: Cross multiply
    12,265,655,471.20x = 18,398,483,206.80 × 5,281,812,143.20
  4. Step 4: Simplify right side
    12,265,655,471.20x = 97,177,332,018,137,513,984
  5. Step 5: Solve for x
    x = 97,177,332,018,137,513,984/12,265,655,471.20
  6. Step 6: Final answer
    x = 7,922,718,214.80

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Double scale
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1.5x scale

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.