Home / 870,935.40-1,306,403.10-646,986.60

Finding the Fourth Proportional to 870,935.40, 1,306,403.10 and 646,986.60

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Solution

The fourth proportional to 870,935.40, 1,306,403.10 and 646,986.60 is: 970,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,935.40 : 1,306,403.10 = 646,986.60 : x
  2. Step 2: Convert to fraction form
    870,935.40/1,306,403.10 = 646,986.60/x
  3. Step 3: Cross multiply
    870,935.40x = 1,306,403.10 × 646,986.60
  4. Step 4: Simplify right side
    870,935.40x = 845,225,299,898.46
  5. Step 5: Solve for x
    x = 845,225,299,898.46/870,935.40
  6. Step 6: Final answer
    x = 970,479.90

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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.