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Finding the Fourth Proportional to 570,528.75, 787,341.69 and 312,416.58

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Solution

The fourth proportional to 570,528.75, 787,341.69 and 312,416.58 is: 431,141.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,528.75 : 787,341.69 = 312,416.58 : x
  2. Step 2: Convert to fraction form
    570,528.75/787,341.69 = 312,416.58/x
  3. Step 3: Cross multiply
    570,528.75x = 787,341.69 × 312,416.58
  4. Step 4: Simplify right side
    570,528.75x = 245,978,598,081.22
  5. Step 5: Solve for x
    x = 245,978,598,081.22/570,528.75
  6. Step 6: Final answer
    x = 431,141.46

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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.