Home / 991,098.10-1,390,336.70-991,098.10

Finding the Fourth Proportional to 991,098.10, 1,390,336.70 and 991,098.10

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Solution

The fourth proportional to 991,098.10, 1,390,336.70 and 991,098.10 is: 1,390,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,098.10 : 1,390,336.70 = 991,098.10 : x
  2. Step 2: Convert to fraction form
    991,098.10/1,390,336.70 = 991,098.10/x
  3. Step 3: Cross multiply
    991,098.10x = 1,390,336.70 × 991,098.10
  4. Step 4: Simplify right side
    991,098.10x = 1,377,960,061,730.27
  5. Step 5: Solve for x
    x = 1,377,960,061,730.27/991,098.10
  6. Step 6: Final answer
    x = 1,390,336.70

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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.