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Finding the Fourth Proportional to 500,058.78, 749,423.87 and 286,928.80

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Solution

The fourth proportional to 500,058.78, 749,423.87 and 286,928.80 is: 430,012.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,058.78 : 749,423.87 = 286,928.80 : x
  2. Step 2: Convert to fraction form
    500,058.78/749,423.87 = 286,928.80/x
  3. Step 3: Cross multiply
    500,058.78x = 749,423.87 × 286,928.80
  4. Step 4: Simplify right side
    500,058.78x = 215,031,292,427.78
  5. Step 5: Solve for x
    x = 215,031,292,427.78/500,058.78
  6. Step 6: Final answer
    x = 430,012.03

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1.5x scale

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.