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Finding the Fourth Proportional to 620,444.72, 856,210.62 and 348,516.80

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Solution

The fourth proportional to 620,444.72, 856,210.62 and 348,516.80 is: 480,951.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,444.72 : 856,210.62 = 348,516.80 : x
  2. Step 2: Convert to fraction form
    620,444.72/856,210.62 = 348,516.80/x
  3. Step 3: Cross multiply
    620,444.72x = 856,210.62 × 348,516.80
  4. Step 4: Simplify right side
    620,444.72x = 298,403,785,408.42
  5. Step 5: Solve for x
    x = 298,403,785,408.42/620,444.72
  6. Step 6: Final answer
    x = 480,951.45

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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.