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Finding the Fourth Proportional to 579,502.20, 812,409 and 579,502.20

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Solution

The fourth proportional to 579,502.20, 812,409 and 579,502.20 is: 812,409

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,502.20 : 812,409 = 579,502.20 : x
  2. Step 2: Convert to fraction form
    579,502.20/812,409 = 579,502.20/x
  3. Step 3: Cross multiply
    579,502.20x = 812,409 × 579,502.20
  4. Step 4: Simplify right side
    579,502.20x = 470,792,802,799.80
  5. Step 5: Solve for x
    x = 470,792,802,799.80/579,502.20
  6. Step 6: Final answer
    x = 812,409

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.