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Finding the Fourth Proportional to 570,288.12, 786,988.08 and 315,633.84

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Solution

The fourth proportional to 570,288.12, 786,988.08 and 315,633.84 is: 435,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,288.12 : 786,988.08 = 315,633.84 : x
  2. Step 2: Convert to fraction form
    570,288.12/786,988.08 = 315,633.84/x
  3. Step 3: Cross multiply
    570,288.12x = 786,988.08 × 315,633.84
  4. Step 4: Simplify right side
    570,288.12x = 248,400,069,724.63
  5. Step 5: Solve for x
    x = 248,400,069,724.63/570,288.12
  6. Step 6: Final answer
    x = 435,569.43

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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.