Home / 645,549.71-890,787.44-373,564.67

Finding the Fourth Proportional to 645,549.71, 890,787.44 and 373,564.67

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Solution

The fourth proportional to 645,549.71, 890,787.44 and 373,564.67 is: 515,478.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,549.71 : 890,787.44 = 373,564.67 : x
  2. Step 2: Convert to fraction form
    645,549.71/890,787.44 = 373,564.67/x
  3. Step 3: Cross multiply
    645,549.71x = 890,787.44 × 373,564.67
  4. Step 4: Simplify right side
    645,549.71x = 332,766,712,543.72
  5. Step 5: Solve for x
    x = 332,766,712,543.72/645,549.71
  6. Step 6: Final answer
    x = 515,478.06

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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.