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Finding the Fourth Proportional to 570,998.40, 856,497.60 and 518,510.40

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Solution

The fourth proportional to 570,998.40, 856,497.60 and 518,510.40 is: 777,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,998.40 : 856,497.60 = 518,510.40 : x
  2. Step 2: Convert to fraction form
    570,998.40/856,497.60 = 518,510.40/x
  3. Step 3: Cross multiply
    570,998.40x = 856,497.60 × 518,510.40
  4. Step 4: Simplify right side
    570,998.40x = 444,102,913,175.04
  5. Step 5: Solve for x
    x = 444,102,913,175.04/570,998.40
  6. Step 6: Final answer
    x = 777,765.60

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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.