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Finding the Fourth Proportional to 986,501.70, 1,377,953.10 and 986,501.70

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Solution

The fourth proportional to 986,501.70, 1,377,953.10 and 986,501.70 is: 1,377,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,501.70 : 1,377,953.10 = 986,501.70 : x
  2. Step 2: Convert to fraction form
    986,501.70/1,377,953.10 = 986,501.70/x
  3. Step 3: Cross multiply
    986,501.70x = 1,377,953.10 × 986,501.70
  4. Step 4: Simplify right side
    986,501.70x = 1,359,353,075,670.27
  5. Step 5: Solve for x
    x = 1,359,353,075,670.27/986,501.70
  6. Step 6: Final answer
    x = 1,377,953.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.