Home / 684,289,720.80-1,026,434,581.20-320,820,818.40

Finding the Fourth Proportional to 684,289,720.80, 1,026,434,581.20 and 320,820,818.40

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Solution

The fourth proportional to 684,289,720.80, 1,026,434,581.20 and 320,820,818.40 is: 481,231,227.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,289,720.80 : 1,026,434,581.20 = 320,820,818.40 : x
  2. Step 2: Convert to fraction form
    684,289,720.80/1,026,434,581.20 = 320,820,818.40/x
  3. Step 3: Cross multiply
    684,289,720.80x = 1,026,434,581.20 × 320,820,818.40
  4. Step 4: Simplify right side
    684,289,720.80x = 329,301,582,374,645,248
  5. Step 5: Solve for x
    x = 329,301,582,374,645,248/684,289,720.80
  6. Step 6: Final answer
    x = 481,231,227.60

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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.