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Finding the Fourth Proportional to 660,746.16, 911,811.98 and 374,358.51

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Solution

The fourth proportional to 660,746.16, 911,811.98 and 374,358.51 is: 516,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,746.16 : 911,811.98 = 374,358.51 : x
  2. Step 2: Convert to fraction form
    660,746.16/911,811.98 = 374,358.51/x
  3. Step 3: Cross multiply
    660,746.16x = 911,811.98 × 374,358.51
  4. Step 4: Simplify right side
    660,746.16x = 341,344,574,232.95
  5. Step 5: Solve for x
    x = 341,344,574,232.95/660,746.16
  6. Step 6: Final answer
    x = 516,604.70

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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.