Home / 1,386,257.10-2,079,385.65-388,985.10

Finding the Fourth Proportional to 1,386,257.10, 2,079,385.65 and 388,985.10

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Solution

The fourth proportional to 1,386,257.10, 2,079,385.65 and 388,985.10 is: 583,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,257.10 : 2,079,385.65 = 388,985.10 : x
  2. Step 2: Convert to fraction form
    1,386,257.10/2,079,385.65 = 388,985.10/x
  3. Step 3: Cross multiply
    1,386,257.10x = 2,079,385.65 × 388,985.10
  4. Step 4: Simplify right side
    1,386,257.10x = 808,850,035,003.82
  5. Step 5: Solve for x
    x = 808,850,035,003.82/1,386,257.10
  6. Step 6: Final answer
    x = 583,477.65

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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.