Home / 1,399,705.46-1,931,655.03-787,897.70

Finding the Fourth Proportional to 1,399,705.46, 1,931,655.03 and 787,897.70

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Solution

The fourth proportional to 1,399,705.46, 1,931,655.03 and 787,897.70 is: 1,087,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,705.46 : 1,931,655.03 = 787,897.70 : x
  2. Step 2: Convert to fraction form
    1,399,705.46/1,931,655.03 = 787,897.70/x
  3. Step 3: Cross multiply
    1,399,705.46x = 1,931,655.03 × 787,897.70
  4. Step 4: Simplify right side
    1,399,705.46x = 1,521,946,555,330.43
  5. Step 5: Solve for x
    x = 1,521,946,555,330.43/1,399,705.46
  6. Step 6: Final answer
    x = 1,087,333.44

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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.