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Finding the Fourth Proportional to 642,166.00, 886,784.76 and 480,740.76

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Solution

The fourth proportional to 642,166.00, 886,784.76 and 480,740.76 is: 663,868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,166.00 : 886,784.76 = 480,740.76 : x
  2. Step 2: Convert to fraction form
    642,166.00/886,784.76 = 480,740.76/x
  3. Step 3: Cross multiply
    642,166.00x = 886,784.76 × 480,740.76
  4. Step 4: Simplify right side
    642,166.00x = 426,313,579,478.82
  5. Step 5: Solve for x
    x = 426,313,579,478.82/642,166.00
  6. Step 6: Final answer
    x = 663,868.19

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Double scale
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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.