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Finding the Fourth Proportional to 553,279.20, 829,918.80 and 343,327.20

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Solution

The fourth proportional to 553,279.20, 829,918.80 and 343,327.20 is: 514,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,279.20 : 829,918.80 = 343,327.20 : x
  2. Step 2: Convert to fraction form
    553,279.20/829,918.80 = 343,327.20/x
  3. Step 3: Cross multiply
    553,279.20x = 829,918.80 × 343,327.20
  4. Step 4: Simplify right side
    553,279.20x = 284,933,697,831.36
  5. Step 5: Solve for x
    x = 284,933,697,831.36/553,279.20
  6. Step 6: Final answer
    x = 514,990.80

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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.