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Finding the Fourth Proportional to 480,986.40, 663,306.80 and 358,748.40

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Solution

The fourth proportional to 480,986.40, 663,306.80 and 358,748.40 is: 494,733.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,986.40 : 663,306.80 = 358,748.40 : x
  2. Step 2: Convert to fraction form
    480,986.40/663,306.80 = 358,748.40/x
  3. Step 3: Cross multiply
    480,986.40x = 663,306.80 × 358,748.40
  4. Step 4: Simplify right side
    480,986.40x = 237,960,253,209.12
  5. Step 5: Solve for x
    x = 237,960,253,209.12/480,986.40
  6. Step 6: Final answer
    x = 494,733.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.