Home / 665,160.16-917,920.86-359,236.72

Finding the Fourth Proportional to 665,160.16, 917,920.86 and 359,236.72

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Solution

The fourth proportional to 665,160.16, 917,920.86 and 359,236.72 is: 495,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,160.16 : 917,920.86 = 359,236.72 : x
  2. Step 2: Convert to fraction form
    665,160.16/917,920.86 = 359,236.72/x
  3. Step 3: Cross multiply
    665,160.16x = 917,920.86 × 359,236.72
  4. Step 4: Simplify right side
    665,160.16x = 329,750,878,965.98
  5. Step 5: Solve for x
    x = 329,750,878,965.98/665,160.16
  6. Step 6: Final answer
    x = 495,746.59

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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.