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Finding the Fourth Proportional to 650,384.80, 908,439.20 and 650,384.80

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Solution

The fourth proportional to 650,384.80, 908,439.20 and 650,384.80 is: 908,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,384.80 : 908,439.20 = 650,384.80 : x
  2. Step 2: Convert to fraction form
    650,384.80/908,439.20 = 650,384.80/x
  3. Step 3: Cross multiply
    650,384.80x = 908,439.20 × 650,384.80
  4. Step 4: Simplify right side
    650,384.80x = 590,835,047,404.16
  5. Step 5: Solve for x
    x = 590,835,047,404.16/650,384.80
  6. Step 6: Final answer
    x = 908,439.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.