Home / 528,200.10-790,226.55-478,433.70

Finding the Fourth Proportional to 528,200.10, 790,226.55 and 478,433.70

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Solution

The fourth proportional to 528,200.10, 790,226.55 and 478,433.70 is: 715,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,200.10 : 790,226.55 = 478,433.70 : x
  2. Step 2: Convert to fraction form
    528,200.10/790,226.55 = 478,433.70/x
  3. Step 3: Cross multiply
    528,200.10x = 790,226.55 × 478,433.70
  4. Step 4: Simplify right side
    528,200.10x = 378,071,012,154.74
  5. Step 5: Solve for x
    x = 378,071,012,154.74/528,200.10
  6. Step 6: Final answer
    x = 715,772.32

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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.