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Finding the Fourth Proportional to 570,955.11, 787,946.18 and 316,307.31

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Solution

The fourth proportional to 570,955.11, 787,946.18 and 316,307.31 is: 436,519.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,955.11 : 787,946.18 = 316,307.31 : x
  2. Step 2: Convert to fraction form
    570,955.11/787,946.18 = 316,307.31/x
  3. Step 3: Cross multiply
    570,955.11x = 787,946.18 × 316,307.31
  4. Step 4: Simplify right side
    570,955.11x = 249,233,135,039.04
  5. Step 5: Solve for x
    x = 249,233,135,039.04/570,955.11
  6. Step 6: Final answer
    x = 436,519.67

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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.