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Finding the Fourth Proportional to 674,389.74, 930,646.98 and 368,459.55

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Solution

The fourth proportional to 674,389.74, 930,646.98 and 368,459.55 is: 508,468.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,389.74 : 930,646.98 = 368,459.55 : x
  2. Step 2: Convert to fraction form
    674,389.74/930,646.98 = 368,459.55/x
  3. Step 3: Cross multiply
    674,389.74x = 930,646.98 × 368,459.55
  4. Step 4: Simplify right side
    674,389.74x = 342,905,767,459.66
  5. Step 5: Solve for x
    x = 342,905,767,459.66/674,389.74
  6. Step 6: Final answer
    x = 508,468.24

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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.