Home / 645,550.46-890,788.48-373,565.42

Finding the Fourth Proportional to 645,550.46, 890,788.48 and 373,565.42

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Solution

The fourth proportional to 645,550.46, 890,788.48 and 373,565.42 is: 515,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,550.46 : 890,788.48 = 373,565.42 : x
  2. Step 2: Convert to fraction form
    645,550.46/890,788.48 = 373,565.42/x
  3. Step 3: Cross multiply
    645,550.46x = 890,788.48 × 373,565.42
  4. Step 4: Simplify right side
    645,550.46x = 332,767,767,274.51
  5. Step 5: Solve for x
    x = 332,767,767,274.51/645,550.46
  6. Step 6: Final answer
    x = 515,479.10

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Double scale
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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.