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Finding the Fourth Proportional to 579,783.80, 869,675.70 and 248,007.80

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Solution

The fourth proportional to 579,783.80, 869,675.70 and 248,007.80 is: 372,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,783.80 : 869,675.70 = 248,007.80 : x
  2. Step 2: Convert to fraction form
    579,783.80/869,675.70 = 248,007.80/x
  3. Step 3: Cross multiply
    579,783.80x = 869,675.70 × 248,007.80
  4. Step 4: Simplify right side
    579,783.80x = 215,686,357,070.46
  5. Step 5: Solve for x
    x = 215,686,357,070.46/579,783.80
  6. Step 6: Final answer
    x = 372,011.70

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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.