Home / 1,521,638.66-2,102,048.58-1,215,312.86

Finding the Fourth Proportional to 1,521,638.66, 2,102,048.58 and 1,215,312.86

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Solution

The fourth proportional to 1,521,638.66, 2,102,048.58 and 1,215,312.86 is: 1,678,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,638.66 : 2,102,048.58 = 1,215,312.86 : x
  2. Step 2: Convert to fraction form
    1,521,638.66/2,102,048.58 = 1,215,312.86/x
  3. Step 3: Cross multiply
    1,521,638.66x = 2,102,048.58 × 1,215,312.86
  4. Step 4: Simplify right side
    1,521,638.66x = 2,554,646,671,618.74
  5. Step 5: Solve for x
    x = 2,554,646,671,618.74/1,521,638.66
  6. Step 6: Final answer
    x = 1,678,878.66

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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.