Home / 438,035.30-604,618-256,786.46

Finding the Fourth Proportional to 438,035.30, 604,618 and 256,786.46

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Solution

The fourth proportional to 438,035.30, 604,618 and 256,786.46 is: 354,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,035.30 : 604,618 = 256,786.46 : x
  2. Step 2: Convert to fraction form
    438,035.30/604,618 = 256,786.46/x
  3. Step 3: Cross multiply
    438,035.30x = 604,618 × 256,786.46
  4. Step 4: Simplify right side
    438,035.30x = 155,257,715,872.28
  5. Step 5: Solve for x
    x = 155,257,715,872.28/438,035.30
  6. Step 6: Final answer
    x = 354,441.11

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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.