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Finding the Fourth Proportional to 647,113.13, 893,019.10 and 375,341.93

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Solution

The fourth proportional to 647,113.13, 893,019.10 and 375,341.93 is: 517,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,113.13 : 893,019.10 = 375,341.93 : x
  2. Step 2: Convert to fraction form
    647,113.13/893,019.10 = 375,341.93/x
  3. Step 3: Cross multiply
    647,113.13x = 893,019.10 × 375,341.93
  4. Step 4: Simplify right side
    647,113.13x = 335,187,512,520.86
  5. Step 5: Solve for x
    x = 335,187,512,520.86/647,113.13
  6. Step 6: Final answer
    x = 517,973.59

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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.