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Finding the Fourth Proportional to 610,688.91, 916,560.41 and 423,831.63

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Solution

The fourth proportional to 610,688.91, 916,560.41 and 423,831.63 is: 636,113.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,688.91 : 916,560.41 = 423,831.63 : x
  2. Step 2: Convert to fraction form
    610,688.91/916,560.41 = 423,831.63/x
  3. Step 3: Cross multiply
    610,688.91x = 916,560.41 × 423,831.63
  4. Step 4: Simplify right side
    610,688.91x = 388,467,290,444.61
  5. Step 5: Solve for x
    x = 388,467,290,444.61/610,688.91
  6. Step 6: Final answer
    x = 636,113.22

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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.