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Finding the Fourth Proportional to 560,698.20, 840,186.18 and 380,549.70

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Solution

The fourth proportional to 560,698.20, 840,186.18 and 380,549.70 is: 570,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,698.20 : 840,186.18 = 380,549.70 : x
  2. Step 2: Convert to fraction form
    560,698.20/840,186.18 = 380,549.70/x
  3. Step 3: Cross multiply
    560,698.20x = 840,186.18 × 380,549.70
  4. Step 4: Simplify right side
    560,698.20x = 319,732,598,743.15
  5. Step 5: Solve for x
    x = 319,732,598,743.15/560,698.20
  6. Step 6: Final answer
    x = 570,240.10

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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.