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Finding the Fourth Proportional to 971,386.80, 1,454,455.80 and 761,434.80

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Solution

The fourth proportional to 971,386.80, 1,454,455.80 and 761,434.80 is: 1,140,095.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,386.80 : 1,454,455.80 = 761,434.80 : x
  2. Step 2: Convert to fraction form
    971,386.80/1,454,455.80 = 761,434.80/x
  3. Step 3: Cross multiply
    971,386.80x = 1,454,455.80 × 761,434.80
  4. Step 4: Simplify right side
    971,386.80x = 1,107,473,261,181.84
  5. Step 5: Solve for x
    x = 1,107,473,261,181.84/971,386.80
  6. Step 6: Final answer
    x = 1,140,095.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.