Home / 472,741.96-653,095.32-309,785.72

Finding the Fourth Proportional to 472,741.96, 653,095.32 and 309,785.72

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Solution

The fourth proportional to 472,741.96, 653,095.32 and 309,785.72 is: 427,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,741.96 : 653,095.32 = 309,785.72 : x
  2. Step 2: Convert to fraction form
    472,741.96/653,095.32 = 309,785.72/x
  3. Step 3: Cross multiply
    472,741.96x = 653,095.32 × 309,785.72
  4. Step 4: Simplify right side
    472,741.96x = 202,319,603,934.83
  5. Step 5: Solve for x
    x = 202,319,603,934.83/472,741.96
  6. Step 6: Final answer
    x = 427,970.48

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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.