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Finding the Fourth Proportional to 570,519.93, 787,370.33 and 315,871.13

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Solution

The fourth proportional to 570,519.93, 787,370.33 and 315,871.13 is: 435,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,519.93 : 787,370.33 = 315,871.13 : x
  2. Step 2: Convert to fraction form
    570,519.93/787,370.33 = 315,871.13/x
  3. Step 3: Cross multiply
    570,519.93x = 787,370.33 × 315,871.13
  4. Step 4: Simplify right side
    570,519.93x = 248,707,550,349.37
  5. Step 5: Solve for x
    x = 248,707,550,349.37/570,519.93
  6. Step 6: Final answer
    x = 435,931.40

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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.