Home / 708,935.20-1,063,402.80-390,070.60

Finding the Fourth Proportional to 708,935.20, 1,063,402.80 and 390,070.60

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Solution

The fourth proportional to 708,935.20, 1,063,402.80 and 390,070.60 is: 585,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,935.20 : 1,063,402.80 = 390,070.60 : x
  2. Step 2: Convert to fraction form
    708,935.20/1,063,402.80 = 390,070.60/x
  3. Step 3: Cross multiply
    708,935.20x = 1,063,402.80 × 390,070.60
  4. Step 4: Simplify right side
    708,935.20x = 414,802,168,237.68
  5. Step 5: Solve for x
    x = 414,802,168,237.68/708,935.20
  6. Step 6: Final answer
    x = 585,105.90

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Double scale
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Similar ratio
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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.