Home / 426,156.08-638,624.88-312,948.32

Finding the Fourth Proportional to 426,156.08, 638,624.88 and 312,948.32

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Solution

The fourth proportional to 426,156.08, 638,624.88 and 312,948.32 is: 468,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,156.08 : 638,624.88 = 312,948.32 : x
  2. Step 2: Convert to fraction form
    426,156.08/638,624.88 = 312,948.32/x
  3. Step 3: Cross multiply
    426,156.08x = 638,624.88 × 312,948.32
  4. Step 4: Simplify right side
    426,156.08x = 199,856,583,306.20
  5. Step 5: Solve for x
    x = 199,856,583,306.20/426,156.08
  6. Step 6: Final answer
    x = 468,975.08

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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.