Home / 645,177.72-890,066.70-403,038.84

Finding the Fourth Proportional to 645,177.72, 890,066.70 and 403,038.84

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Solution

The fourth proportional to 645,177.72, 890,066.70 and 403,038.84 is: 556,019.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,177.72 : 890,066.70 = 403,038.84 : x
  2. Step 2: Convert to fraction form
    645,177.72/890,066.70 = 403,038.84/x
  3. Step 3: Cross multiply
    645,177.72x = 890,066.70 × 403,038.84
  4. Step 4: Simplify right side
    645,177.72x = 358,731,450,290.63
  5. Step 5: Solve for x
    x = 358,731,450,290.63/645,177.72
  6. Step 6: Final answer
    x = 556,019.59

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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.