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Finding the Fourth Proportional to 570,628.99, 787,491.74 and 315,980.17

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Solution

The fourth proportional to 570,628.99, 787,491.74 and 315,980.17 is: 436,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,628.99 : 787,491.74 = 315,980.17 : x
  2. Step 2: Convert to fraction form
    570,628.99/787,491.74 = 315,980.17/x
  3. Step 3: Cross multiply
    570,628.99x = 787,491.74 × 315,980.17
  4. Step 4: Simplify right side
    570,628.99x = 248,831,773,878.80
  5. Step 5: Solve for x
    x = 248,831,773,878.80/570,628.99
  6. Step 6: Final answer
    x = 436,065.78

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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.