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Finding the Fourth Proportional to 548,417.70, 822,626.55 and 478,433.70

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Solution

The fourth proportional to 548,417.70, 822,626.55 and 478,433.70 is: 717,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,417.70 : 822,626.55 = 478,433.70 : x
  2. Step 2: Convert to fraction form
    548,417.70/822,626.55 = 478,433.70/x
  3. Step 3: Cross multiply
    548,417.70x = 822,626.55 × 478,433.70
  4. Step 4: Simplify right side
    548,417.70x = 393,572,264,034.74
  5. Step 5: Solve for x
    x = 393,572,264,034.74/548,417.70
  6. Step 6: Final answer
    x = 717,650.55

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Double scale
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Similar ratio
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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.