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Finding the Fourth Proportional to 570,643.00, 787,477.61 and 315,988.72

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Solution

The fourth proportional to 570,643.00, 787,477.61 and 315,988.72 is: 436,059.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,643.00 : 787,477.61 = 315,988.72 : x
  2. Step 2: Convert to fraction form
    570,643.00/787,477.61 = 315,988.72/x
  3. Step 3: Cross multiply
    570,643.00x = 787,477.61 × 315,988.72
  4. Step 4: Simplify right side
    570,643.00x = 248,834,040,833.84
  5. Step 5: Solve for x
    x = 248,834,040,833.84/570,643.00
  6. Step 6: Final answer
    x = 436,059.05

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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.