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Finding the Fourth Proportional to 620,281.92, 856,009.68 and 348,397.76

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Solution

The fourth proportional to 620,281.92, 856,009.68 and 348,397.76 is: 480,800.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,281.92 : 856,009.68 = 348,397.76 : x
  2. Step 2: Convert to fraction form
    620,281.92/856,009.68 = 348,397.76/x
  3. Step 3: Cross multiply
    620,281.92x = 856,009.68 × 348,397.76
  4. Step 4: Simplify right side
    620,281.92x = 298,231,855,050.32
  5. Step 5: Solve for x
    x = 298,231,855,050.32/620,281.92
  6. Step 6: Final answer
    x = 480,800.50

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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.