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Finding the Fourth Proportional to 978,762.88, 1,468,125.96 and 402,264.82

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Solution

The fourth proportional to 978,762.88, 1,468,125.96 and 402,264.82 is: 603,389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,762.88 : 1,468,125.96 = 402,264.82 : x
  2. Step 2: Convert to fraction form
    978,762.88/1,468,125.96 = 402,264.82/x
  3. Step 3: Cross multiply
    978,762.88x = 1,468,125.96 × 402,264.82
  4. Step 4: Simplify right side
    978,762.88x = 590,575,425,036.73
  5. Step 5: Solve for x
    x = 590,575,425,036.73/978,762.88
  6. Step 6: Final answer
    x = 603,389.68

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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.