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Finding the Fourth Proportional to 999,743.60, 1,499,809.80 and 289,794.80

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Solution

The fourth proportional to 999,743.60, 1,499,809.80 and 289,794.80 is: 434,748.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,743.60 : 1,499,809.80 = 289,794.80 : x
  2. Step 2: Convert to fraction form
    999,743.60/1,499,809.80 = 289,794.80/x
  3. Step 3: Cross multiply
    999,743.60x = 1,499,809.80 × 289,794.80
  4. Step 4: Simplify right side
    999,743.60x = 434,637,081,029.04
  5. Step 5: Solve for x
    x = 434,637,081,029.04/999,743.60
  6. Step 6: Final answer
    x = 434,748.55

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1.5x scale

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.