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Finding the Fourth Proportional to 12,676,502.80, 19,014,581.40 and 4,157,117.20

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Solution

The fourth proportional to 12,676,502.80, 19,014,581.40 and 4,157,117.20 is: 6,235,619.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676,502.80 : 19,014,581.40 = 4,157,117.20 : x
  2. Step 2: Convert to fraction form
    12,676,502.80/19,014,581.40 = 4,157,117.20/x
  3. Step 3: Cross multiply
    12,676,502.80x = 19,014,581.40 × 4,157,117.20
  4. Step 4: Simplify right side
    12,676,502.80x = 79,045,843,388,740.08
  5. Step 5: Solve for x
    x = 79,045,843,388,740.08/12,676,502.80
  6. Step 6: Final answer
    x = 6,235,619.13

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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.