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Finding the Fourth Proportional to 908,637.63, 1,362,978.32 and 434,802.21

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Solution

The fourth proportional to 908,637.63, 1,362,978.32 and 434,802.21 is: 652,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,637.63 : 1,362,978.32 = 434,802.21 : x
  2. Step 2: Convert to fraction form
    908,637.63/1,362,978.32 = 434,802.21/x
  3. Step 3: Cross multiply
    908,637.63x = 1,362,978.32 × 434,802.21
  4. Step 4: Simplify right side
    908,637.63x = 592,625,983,544.08
  5. Step 5: Solve for x
    x = 592,625,983,544.08/908,637.63
  6. Step 6: Final answer
    x = 652,213.78

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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.