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Finding the Fourth Proportional to 634,211.52, 874,703.64 and 557,567.76

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Solution

The fourth proportional to 634,211.52, 874,703.64 and 557,567.76 is: 768,996.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,211.52 : 874,703.64 = 557,567.76 : x
  2. Step 2: Convert to fraction form
    634,211.52/874,703.64 = 557,567.76/x
  3. Step 3: Cross multiply
    634,211.52x = 874,703.64 × 557,567.76
  4. Step 4: Simplify right side
    634,211.52x = 487,706,549,218.65
  5. Step 5: Solve for x
    x = 487,706,549,218.65/634,211.52
  6. Step 6: Final answer
    x = 768,996.67

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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.