Home / 645,623.66-968,427.59-290,386.82

Finding the Fourth Proportional to 645,623.66, 968,427.59 and 290,386.82

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Solution

The fourth proportional to 645,623.66, 968,427.59 and 290,386.82 is: 435,576.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,623.66 : 968,427.59 = 290,386.82 : x
  2. Step 2: Convert to fraction form
    645,623.66/968,427.59 = 290,386.82/x
  3. Step 3: Cross multiply
    645,623.66x = 968,427.59 × 290,386.82
  4. Step 4: Simplify right side
    645,623.66x = 281,218,601,966.29
  5. Step 5: Solve for x
    x = 281,218,601,966.29/645,623.66
  6. Step 6: Final answer
    x = 435,576.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.