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Finding the Fourth Proportional to 870,998.76, 1,306,580.76 and 338,560.92

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Solution

The fourth proportional to 870,998.76, 1,306,580.76 and 338,560.92 is: 507,873.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,998.76 : 1,306,580.76 = 338,560.92 : x
  2. Step 2: Convert to fraction form
    870,998.76/1,306,580.76 = 338,560.92/x
  3. Step 3: Cross multiply
    870,998.76x = 1,306,580.76 × 338,560.92
  4. Step 4: Simplify right side
    870,998.76x = 442,357,184,159.90
  5. Step 5: Solve for x
    x = 442,357,184,159.90/870,998.76
  6. Step 6: Final answer
    x = 507,873.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.