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Finding the Fourth Proportional to 570,899.66, 787,889.52 and 316,274.54

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Solution

The fourth proportional to 570,899.66, 787,889.52 and 316,274.54 is: 436,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,899.66 : 787,889.52 = 316,274.54 : x
  2. Step 2: Convert to fraction form
    570,899.66/787,889.52 = 316,274.54/x
  3. Step 3: Cross multiply
    570,899.66x = 787,889.52 × 316,274.54
  4. Step 4: Simplify right side
    570,899.66x = 249,189,395,508.82
  5. Step 5: Solve for x
    x = 249,189,395,508.82/570,899.66
  6. Step 6: Final answer
    x = 436,485.45

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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.