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Finding the Fourth Proportional to 646,376.74, 891,166.11 and 529,656.22

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Solution

The fourth proportional to 646,376.74, 891,166.11 and 529,656.22 is: 730,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,376.74 : 891,166.11 = 529,656.22 : x
  2. Step 2: Convert to fraction form
    646,376.74/891,166.11 = 529,656.22/x
  3. Step 3: Cross multiply
    646,376.74x = 891,166.11 × 529,656.22
  4. Step 4: Simplify right side
    646,376.74x = 472,011,673,214.70
  5. Step 5: Solve for x
    x = 472,011,673,214.70/646,376.74
  6. Step 6: Final answer
    x = 730,242.36

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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.