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Finding the Fourth Proportional to 707,033, 975,705.70 and 389,081

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Solution

The fourth proportional to 707,033, 975,705.70 and 389,081 is: 536,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,033 : 975,705.70 = 389,081 : x
  2. Step 2: Convert to fraction form
    707,033/975,705.70 = 389,081/x
  3. Step 3: Cross multiply
    707,033x = 975,705.70 × 389,081
  4. Step 4: Simplify right side
    707,033x = 379,628,549,461.70
  5. Step 5: Solve for x
    x = 379,628,549,461.70/707,033
  6. Step 6: Final answer
    x = 536,931.87

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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.