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Finding the Fourth Proportional to 528,055.40, 791,499.90 and 291,567.80

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Solution

The fourth proportional to 528,055.40, 791,499.90 and 291,567.80 is: 437,029.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,055.40 : 791,499.90 = 291,567.80 : x
  2. Step 2: Convert to fraction form
    528,055.40/791,499.90 = 291,567.80/x
  3. Step 3: Cross multiply
    528,055.40x = 791,499.90 × 291,567.80
  4. Step 4: Simplify right side
    528,055.40x = 230,775,884,543.22
  5. Step 5: Solve for x
    x = 230,775,884,543.22/528,055.40
  6. Step 6: Final answer
    x = 437,029.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.