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Finding the Fourth Proportional to 570,953.10, 787,851.71 and 316,240.50

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Solution

The fourth proportional to 570,953.10, 787,851.71 and 316,240.50 is: 436,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,953.10 : 787,851.71 = 316,240.50 : x
  2. Step 2: Convert to fraction form
    570,953.10/787,851.71 = 316,240.50/x
  3. Step 3: Cross multiply
    570,953.10x = 787,851.71 × 316,240.50
  4. Step 4: Simplify right side
    570,953.10x = 249,150,623,034.25
  5. Step 5: Solve for x
    x = 249,150,623,034.25/570,953.10
  6. Step 6: Final answer
    x = 436,376.69

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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.