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Finding the Fourth Proportional to 570,210.82, 786,915.63 and 315,562.09

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Solution

The fourth proportional to 570,210.82, 786,915.63 and 315,562.09 is: 435,489.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,210.82 : 786,915.63 = 315,562.09 : x
  2. Step 2: Convert to fraction form
    570,210.82/786,915.63 = 315,562.09/x
  3. Step 3: Cross multiply
    570,210.82x = 786,915.63 × 315,562.09
  4. Step 4: Simplify right side
    570,210.82x = 248,320,740,856.47
  5. Step 5: Solve for x
    x = 248,320,740,856.47/570,210.82
  6. Step 6: Final answer
    x = 435,489.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.