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Finding the Fourth Proportional to 660,482.67, 990,411.75 and 255,864.41

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Solution

The fourth proportional to 660,482.67, 990,411.75 and 255,864.41 is: 383,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,482.67 : 990,411.75 = 255,864.41 : x
  2. Step 2: Convert to fraction form
    660,482.67/990,411.75 = 255,864.41/x
  3. Step 3: Cross multiply
    660,482.67x = 990,411.75 × 255,864.41
  4. Step 4: Simplify right side
    660,482.67x = 253,411,118,070.82
  5. Step 5: Solve for x
    x = 253,411,118,070.82/660,482.67
  6. Step 6: Final answer
    x = 383,675.65

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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.