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Finding the Fourth Proportional to 636,657.51, 878,604 and 350,185.11

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Solution

The fourth proportional to 636,657.51, 878,604 and 350,185.11 is: 483,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,657.51 : 878,604 = 350,185.11 : x
  2. Step 2: Convert to fraction form
    636,657.51/878,604 = 350,185.11/x
  3. Step 3: Cross multiply
    636,657.51x = 878,604 × 350,185.11
  4. Step 4: Simplify right side
    636,657.51x = 307,674,038,386.44
  5. Step 5: Solve for x
    x = 307,674,038,386.44/636,657.51
  6. Step 6: Final answer
    x = 483,264.60

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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.