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Finding the Fourth Proportional to 656,642.80, 984,964.20 and 573,698.80

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Solution

The fourth proportional to 656,642.80, 984,964.20 and 573,698.80 is: 860,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,642.80 : 984,964.20 = 573,698.80 : x
  2. Step 2: Convert to fraction form
    656,642.80/984,964.20 = 573,698.80/x
  3. Step 3: Cross multiply
    656,642.80x = 984,964.20 × 573,698.80
  4. Step 4: Simplify right side
    656,642.80x = 565,072,779,582.96
  5. Step 5: Solve for x
    x = 565,072,779,582.96/656,642.80
  6. Step 6: Final answer
    x = 860,548.20

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Half scale
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Double scale
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Similar ratio
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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.