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Finding the Fourth Proportional to 697,980.76, 1,047,282.18 and 365,479

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Solution

The fourth proportional to 697,980.76, 1,047,282.18 and 365,479 is: 548,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,980.76 : 1,047,282.18 = 365,479 : x
  2. Step 2: Convert to fraction form
    697,980.76/1,047,282.18 = 365,479/x
  3. Step 3: Cross multiply
    697,980.76x = 1,047,282.18 × 365,479
  4. Step 4: Simplify right side
    697,980.76x = 382,759,643,864.22
  5. Step 5: Solve for x
    x = 382,759,643,864.22/697,980.76
  6. Step 6: Final answer
    x = 548,381.37

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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.