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Finding the Fourth Proportional to 506,858.76, 699,389.85 and 307,844.41

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Solution

The fourth proportional to 506,858.76, 699,389.85 and 307,844.41 is: 424,779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,858.76 : 699,389.85 = 307,844.41 : x
  2. Step 2: Convert to fraction form
    506,858.76/699,389.85 = 307,844.41/x
  3. Step 3: Cross multiply
    506,858.76x = 699,389.85 × 307,844.41
  4. Step 4: Simplify right side
    506,858.76x = 215,303,256,607.48
  5. Step 5: Solve for x
    x = 215,303,256,607.48/506,858.76
  6. Step 6: Final answer
    x = 424,779.59

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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.