Home / 684,288,588.80-1,026,432,883.20-320,819,686.40

Finding the Fourth Proportional to 684,288,588.80, 1,026,432,883.20 and 320,819,686.40

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Solution

The fourth proportional to 684,288,588.80, 1,026,432,883.20 and 320,819,686.40 is: 481,229,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,288,588.80 : 1,026,432,883.20 = 320,819,686.40 : x
  2. Step 2: Convert to fraction form
    684,288,588.80/1,026,432,883.20 = 320,819,686.40/x
  3. Step 3: Cross multiply
    684,288,588.80x = 1,026,432,883.20 × 320,819,686.40
  4. Step 4: Simplify right side
    684,288,588.80x = 329,299,875,698,871,808
  5. Step 5: Solve for x
    x = 329,299,875,698,871,808/684,288,588.80
  6. Step 6: Final answer
    x = 481,229,529.60

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Double scale
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Similar ratio
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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.