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Finding the Fourth Proportional to 661,444.92, 912,792.78 and 359,638.20

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Solution

The fourth proportional to 661,444.92, 912,792.78 and 359,638.20 is: 496,300.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,444.92 : 912,792.78 = 359,638.20 : x
  2. Step 2: Convert to fraction form
    661,444.92/912,792.78 = 359,638.20/x
  3. Step 3: Cross multiply
    661,444.92x = 912,792.78 × 359,638.20
  4. Step 4: Simplify right side
    661,444.92x = 328,275,152,372.20
  5. Step 5: Solve for x
    x = 328,275,152,372.20/661,444.92
  6. Step 6: Final answer
    x = 496,300.06

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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.