Home / 645,488.40-890,711.67-373,502.16

Finding the Fourth Proportional to 645,488.40, 890,711.67 and 373,502.16

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Solution

The fourth proportional to 645,488.40, 890,711.67 and 373,502.16 is: 515,396.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,488.40 : 890,711.67 = 373,502.16 : x
  2. Step 2: Convert to fraction form
    645,488.40/890,711.67 = 373,502.16/x
  3. Step 3: Cross multiply
    645,488.40x = 890,711.67 × 373,502.16
  4. Step 4: Simplify right side
    645,488.40x = 332,682,732,682.21
  5. Step 5: Solve for x
    x = 332,682,732,682.21/645,488.40
  6. Step 6: Final answer
    x = 515,396.92

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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.