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Finding the Fourth Proportional to 649,539.76, 896,328.66 and 359,134.51

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Solution

The fourth proportional to 649,539.76, 896,328.66 and 359,134.51 is: 495,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,539.76 : 896,328.66 = 359,134.51 : x
  2. Step 2: Convert to fraction form
    649,539.76/896,328.66 = 359,134.51/x
  3. Step 3: Cross multiply
    649,539.76x = 896,328.66 × 359,134.51
  4. Step 4: Simplify right side
    649,539.76x = 321,902,554,108.06
  5. Step 5: Solve for x
    x = 321,902,554,108.06/649,539.76
  6. Step 6: Final answer
    x = 495,585.60

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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.