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Finding the Fourth Proportional to 612,648.53, 918,291.79 and 462,401.63

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Solution

The fourth proportional to 612,648.53, 918,291.79 and 462,401.63 is: 693,088.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,648.53 : 918,291.79 = 462,401.63 : x
  2. Step 2: Convert to fraction form
    612,648.53/918,291.79 = 462,401.63/x
  3. Step 3: Cross multiply
    612,648.53x = 918,291.79 × 462,401.63
  4. Step 4: Simplify right side
    612,648.53x = 424,619,623,385.35
  5. Step 5: Solve for x
    x = 424,619,623,385.35/612,648.53
  6. Step 6: Final answer
    x = 693,088.45

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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.