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Finding the Fourth Proportional to 570,703.42, 787,578.88 and 328,981.60

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Solution

The fourth proportional to 570,703.42, 787,578.88 and 328,981.60 is: 453,999.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,703.42 : 787,578.88 = 328,981.60 : x
  2. Step 2: Convert to fraction form
    570,703.42/787,578.88 = 328,981.60/x
  3. Step 3: Cross multiply
    570,703.42x = 787,578.88 × 328,981.60
  4. Step 4: Simplify right side
    570,703.42x = 259,098,956,130.71
  5. Step 5: Solve for x
    x = 259,098,956,130.71/570,703.42
  6. Step 6: Final answer
    x = 453,999.31

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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.