Home / 1,118,642.82-1,677,415.05-478,856.22

Finding the Fourth Proportional to 1,118,642.82, 1,677,415.05 and 478,856.22

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Solution

The fourth proportional to 1,118,642.82, 1,677,415.05 and 478,856.22 is: 718,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,642.82 : 1,677,415.05 = 478,856.22 : x
  2. Step 2: Convert to fraction form
    1,118,642.82/1,677,415.05 = 478,856.22/x
  3. Step 3: Cross multiply
    1,118,642.82x = 1,677,415.05 × 478,856.22
  4. Step 4: Simplify right side
    1,118,642.82x = 803,240,630,214.11
  5. Step 5: Solve for x
    x = 803,240,630,214.11/1,118,642.82
  6. Step 6: Final answer
    x = 718,049.24

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Double scale
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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.