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Finding the Fourth Proportional to 570,921.14, 787,860.32 and 316,274.42

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Solution

The fourth proportional to 570,921.14, 787,860.32 and 316,274.42 is: 436,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,921.14 : 787,860.32 = 316,274.42 : x
  2. Step 2: Convert to fraction form
    570,921.14/787,860.32 = 316,274.42/x
  3. Step 3: Cross multiply
    570,921.14x = 787,860.32 × 316,274.42
  4. Step 4: Simplify right side
    570,921.14x = 249,180,065,749.01
  5. Step 5: Solve for x
    x = 249,180,065,749.01/570,921.14
  6. Step 6: Final answer
    x = 436,452.69

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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.