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Finding the Fourth Proportional to 709,792.04, 979,598.94 and 403,942.80

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Solution

The fourth proportional to 709,792.04, 979,598.94 and 403,942.80 is: 557,489.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,792.04 : 979,598.94 = 403,942.80 : x
  2. Step 2: Convert to fraction form
    709,792.04/979,598.94 = 403,942.80/x
  3. Step 3: Cross multiply
    709,792.04x = 979,598.94 × 403,942.80
  4. Step 4: Simplify right side
    709,792.04x = 395,701,938,700.63
  5. Step 5: Solve for x
    x = 395,701,938,700.63/709,792.04
  6. Step 6: Final answer
    x = 557,489.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.