Home / 3,178,746.72-4,386,691.08-1,728,457.92

Finding the Fourth Proportional to 3,178,746.72, 4,386,691.08 and 1,728,457.92

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Solution

The fourth proportional to 3,178,746.72, 4,386,691.08 and 1,728,457.92 is: 2,385,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,746.72 : 4,386,691.08 = 1,728,457.92 : x
  2. Step 2: Convert to fraction form
    3,178,746.72/4,386,691.08 = 1,728,457.92/x
  3. Step 3: Cross multiply
    3,178,746.72x = 4,386,691.08 × 1,728,457.92
  4. Step 4: Simplify right side
    3,178,746.72x = 7,582,210,939,819.35
  5. Step 5: Solve for x
    x = 7,582,210,939,819.35/3,178,746.72
  6. Step 6: Final answer
    x = 2,385,283.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.