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Finding the Fourth Proportional to 893,670.30, 1,339,630.65 and 360,479.70

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Solution

The fourth proportional to 893,670.30, 1,339,630.65 and 360,479.70 is: 540,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,670.30 : 1,339,630.65 = 360,479.70 : x
  2. Step 2: Convert to fraction form
    893,670.30/1,339,630.65 = 360,479.70/x
  3. Step 3: Cross multiply
    893,670.30x = 1,339,630.65 × 360,479.70
  4. Step 4: Simplify right side
    893,670.30x = 482,909,654,822.81
  5. Step 5: Solve for x
    x = 482,909,654,822.81/893,670.30
  6. Step 6: Final answer
    x = 540,366.68

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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.