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Finding the Fourth Proportional to 666,985.83, 1,000,329 and 306,810.76

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Solution

The fourth proportional to 666,985.83, 1,000,329 and 306,810.76 is: 460,147.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,985.83 : 1,000,329 = 306,810.76 : x
  2. Step 2: Convert to fraction form
    666,985.83/1,000,329 = 306,810.76/x
  3. Step 3: Cross multiply
    666,985.83x = 1,000,329 × 306,810.76
  4. Step 4: Simplify right side
    666,985.83x = 306,911,700,740.04
  5. Step 5: Solve for x
    x = 306,911,700,740.04/666,985.83
  6. Step 6: Final answer
    x = 460,147.26

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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.