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Finding the Fourth Proportional to 679,389.83, 937,538.65 and 373,466.80

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Solution

The fourth proportional to 679,389.83, 937,538.65 and 373,466.80 is: 515,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,389.83 : 937,538.65 = 373,466.80 : x
  2. Step 2: Convert to fraction form
    679,389.83/937,538.65 = 373,466.80/x
  3. Step 3: Cross multiply
    679,389.83x = 937,538.65 × 373,466.80
  4. Step 4: Simplify right side
    679,389.83x = 350,139,561,130.58
  5. Step 5: Solve for x
    x = 350,139,561,130.58/679,389.83
  6. Step 6: Final answer
    x = 515,373.57

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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.