Home / 870,800.63-1,306,283.49-338,362.79

Finding the Fourth Proportional to 870,800.63, 1,306,283.49 and 338,362.79

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Solution

The fourth proportional to 870,800.63, 1,306,283.49 and 338,362.79 is: 507,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,800.63 : 1,306,283.49 = 338,362.79 : x
  2. Step 2: Convert to fraction form
    870,800.63/1,306,283.49 = 338,362.79/x
  3. Step 3: Cross multiply
    870,800.63x = 1,306,283.49 × 338,362.79
  4. Step 4: Simplify right side
    870,800.63x = 441,997,719,675.92
  5. Step 5: Solve for x
    x = 441,997,719,675.92/870,800.63
  6. Step 6: Final answer
    x = 507,576.25

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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.