Home / 30,207,903.60-45,311,855.40-8,643,208.80

Finding the Fourth Proportional to 30,207,903.60, 45,311,855.40 and 8,643,208.80

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Solution

The fourth proportional to 30,207,903.60, 45,311,855.40 and 8,643,208.80 is: 12,964,813.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207,903.60 : 45,311,855.40 = 8,643,208.80 : x
  2. Step 2: Convert to fraction form
    30,207,903.60/45,311,855.40 = 8,643,208.80/x
  3. Step 3: Cross multiply
    30,207,903.60x = 45,311,855.40 × 8,643,208.80
  4. Step 4: Simplify right side
    30,207,903.60x = 391,639,827,337,607.56
  5. Step 5: Solve for x
    x = 391,639,827,337,607.56/30,207,903.60
  6. Step 6: Final answer
    x = 12,964,813.20

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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.