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Finding the Fourth Proportional to 570,012.90, 786,548.65 and 328,373.70

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Solution

The fourth proportional to 570,012.90, 786,548.65 and 328,373.70 is: 453,115.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,012.90 : 786,548.65 = 328,373.70 : x
  2. Step 2: Convert to fraction form
    570,012.90/786,548.65 = 328,373.70/x
  3. Step 3: Cross multiply
    570,012.90x = 786,548.65 × 328,373.70
  4. Step 4: Simplify right side
    570,012.90x = 258,281,890,430.51
  5. Step 5: Solve for x
    x = 258,281,890,430.51/570,012.90
  6. Step 6: Final answer
    x = 453,115.87

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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.