Home / 645,442.32-890,775.72-369,836.67

Finding the Fourth Proportional to 645,442.32, 890,775.72 and 369,836.67

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Solution

The fourth proportional to 645,442.32, 890,775.72 and 369,836.67 is: 510,412.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,442.32 : 890,775.72 = 369,836.67 : x
  2. Step 2: Convert to fraction form
    645,442.32/890,775.72 = 369,836.67/x
  3. Step 3: Cross multiply
    645,442.32x = 890,775.72 × 369,836.67
  4. Step 4: Simplify right side
    645,442.32x = 329,441,526,001.65
  5. Step 5: Solve for x
    x = 329,441,526,001.65/645,442.32
  6. Step 6: Final answer
    x = 510,412.03

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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.