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Finding the Fourth Proportional to 488,703.92, 674,011.56 and 343,988.76

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Solution

The fourth proportional to 488,703.92, 674,011.56 and 343,988.76 is: 474,423.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,703.92 : 674,011.56 = 343,988.76 : x
  2. Step 2: Convert to fraction form
    488,703.92/674,011.56 = 343,988.76/x
  3. Step 3: Cross multiply
    488,703.92x = 674,011.56 × 343,988.76
  4. Step 4: Simplify right side
    488,703.92x = 231,852,400,750.07
  5. Step 5: Solve for x
    x = 231,852,400,750.07/488,703.92
  6. Step 6: Final answer
    x = 474,423.05

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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.