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Finding the Fourth Proportional to 1,178,813.04, 1,768,219.52 and 430,859.04

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Solution

The fourth proportional to 1,178,813.04, 1,768,219.52 and 430,859.04 is: 646,288.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,813.04 : 1,768,219.52 = 430,859.04 : x
  2. Step 2: Convert to fraction form
    1,178,813.04/1,768,219.52 = 430,859.04/x
  3. Step 3: Cross multiply
    1,178,813.04x = 1,768,219.52 × 430,859.04
  4. Step 4: Simplify right side
    1,178,813.04x = 761,853,364,896.46
  5. Step 5: Solve for x
    x = 761,853,364,896.46/1,178,813.04
  6. Step 6: Final answer
    x = 646,288.55

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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.