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Finding the Fourth Proportional to 647,111.13, 893,016.34 and 375,339.93

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Solution

The fourth proportional to 647,111.13, 893,016.34 and 375,339.93 is: 517,970.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,111.13 : 893,016.34 = 375,339.93 : x
  2. Step 2: Convert to fraction form
    647,111.13/893,016.34 = 375,339.93/x
  3. Step 3: Cross multiply
    647,111.13x = 893,016.34 × 375,339.93
  4. Step 4: Simplify right side
    647,111.13x = 335,184,688,368.58
  5. Step 5: Solve for x
    x = 335,184,688,368.58/647,111.13
  6. Step 6: Final answer
    x = 517,970.83

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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.