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Finding the Fourth Proportional to 670,484.81, 925,269.05 and 368,678.81

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Solution

The fourth proportional to 670,484.81, 925,269.05 and 368,678.81 is: 508,776.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,484.81 : 925,269.05 = 368,678.81 : x
  2. Step 2: Convert to fraction form
    670,484.81/925,269.05 = 368,678.81/x
  3. Step 3: Cross multiply
    670,484.81x = 925,269.05 × 368,678.81
  4. Step 4: Simplify right side
    670,484.81x = 341,127,095,518.70
  5. Step 5: Solve for x
    x = 341,127,095,518.70/670,484.81
  6. Step 6: Final answer
    x = 508,776.77

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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.