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Finding the Fourth Proportional to 570,974.77, 787,914.16 and 316,310.77

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Solution

The fourth proportional to 570,974.77, 787,914.16 and 316,310.77 is: 436,491.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,974.77 : 787,914.16 = 316,310.77 : x
  2. Step 2: Convert to fraction form
    570,974.77/787,914.16 = 316,310.77/x
  3. Step 3: Cross multiply
    570,974.77x = 787,914.16 × 316,310.77
  4. Step 4: Simplify right side
    570,974.77x = 249,225,734,643.50
  5. Step 5: Solve for x
    x = 249,225,734,643.50/570,974.77
  6. Step 6: Final answer
    x = 436,491.68

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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.